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BOS to SEA

Boston to Seattle Flights

Compare fares, departure times, stops and baggage details for this route, then open the full search when you are ready to check current availability and complete booking.

Fare checked before payment All fees shown upfront Transparent cancellation policy 24×7 booking support
Lowest fare₹17,006Delta Air Lines
Fastest5h 17mgate to gate
Options found147flights on this route
Find your flight BOS SEA

Available Flights & Fares

Compare fares, timings and baggage. Pick the flight that suits your trip.

Prices in INR
147 flight options

Fares are checked again before payment.

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Delta Air Lines
Delta Air Lines
DL-384
07:55
2026-10-30
BOSTON (BOS)Logan International
6H :25 M
Non Stop
11:20
2026-10-30
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-332
10:50
2026-10-30
BOSTON (BOS)Logan International
6H :22 M
Non Stop
14:12
2026-10-30
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-2889
15:47
2026-10-30
BOSTON (BOS)Logan International
6H :18 M
Non Stop
19:05
2026-10-30
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-797
19:25
2026-10-30
BOSTON (BOS)Logan International
6H :24 M
Non Stop
22:49
2026-10-30
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-2303
05:50
2026-10-30
BOSTON (BOS)Logan International
8H :09 M
1 Stop
MSP · 0h 50m Minneapolis (MSP), United States
10:59
2026-10-30
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-1410
06:15
2026-10-30
BOSTON (BOS)Logan International
10H :19 M
1 Stop
AUS · 1h 02m Austin (AUS), United States
13:34
2026-10-30
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-695
06:50
2026-10-30
BOSTON (BOS)Logan International
10H :29 M
1 Stop
ATL · 2h 02m Atlanta (ATL), United States
14:19
2026-10-30
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-456
09:05
2026-10-30
BOSTON (BOS)Logan International
10H :11 M
1 Stop
ATL · 1h 47m Atlanta (ATL), United States
16:16
2026-10-30
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-5720
09:10
2026-10-30
BOSTON (BOS)Logan International
9H :11 M
1 Stop
JFK · 1h 19m New York (JFK), United States
15:21
2026-10-30
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-1127
15:15
2026-10-30
BOSTON (BOS)Logan International
8H :35 M
1 Stop
MSP · 1h 24m Minneapolis (MSP), United States
20:50
2026-10-30
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-2330
16:15
2026-10-30
BOSTON (BOS)Logan International
10H :37 M
1 Stop
ATL · 2h 08m Atlanta (ATL), United States
23:52
2026-10-30
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-1474
10:15
2026-10-30
BOSTON (BOS)Logan International
11H :49 M
1 Stop
ATL · 3h 25m Atlanta (ATL), United States
19:04
2026-10-30
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-464
11:15
2026-10-30
BOSTON (BOS)Logan International
10H :47 M
1 Stop
SLC · 3h 12m Salt Lake City (SLC), United States
19:02
2026-10-30
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-2391
13:57
2026-10-30
BOSTON (BOS)Logan International
11H :06 M
1 Stop
ATL · 2h 44m Atlanta (ATL), United States
22:03
2026-10-30
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-1710
14:59
2026-10-30
BOSTON (BOS)Logan International
10H :04 M
1 Stop
ATL · 1h 43m Atlanta (ATL), United States
22:03
2026-10-30
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-1710
14:59
2026-10-30
BOSTON (BOS)Logan International
11H :53 M
1 Stop
ATL · 3h 28m Atlanta (ATL), United States
23:52
2026-10-30
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-2242
05:30
2026-10-30
BOSTON (BOS)Logan International
9H :52 M
1 Stop
ATL · 1h 20m Atlanta (ATL), United States
12:22
2026-10-30
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-2004
11:30
2026-10-30
BOSTON (BOS)Logan International
11H :57 M
1 Stop
LAX · 2h 52m Los Angeles (LAX), United States
20:27
2026-10-30
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
AA
American Airlines
AA-2527
05:17
2026-10-30
BOSTON (BOS)Logan International
11H :18 M
1 Stop
DFW · 2h 37m Dallas (DFW), United States
13:35
2026-10-30
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
AA
American Airlines
AA-2527
05:17
2026-10-30
BOSTON (BOS)Logan International
12H :35 M
1 Stop
DFW · 3h 51m Dallas (DFW), United States
14:52
2026-10-30
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
AA
American Airlines
AA-1540
06:00
2026-10-30
BOSTON (BOS)Logan International
8H :39 M
1 Stop
PHL · 0h 43m Philadelphia (PHL), United States
11:39
2026-10-30
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
AA
American Airlines
AA-418
06:00
2026-10-30
BOSTON (BOS)Logan International
9H :18 M
1 Stop
CLT · 1h 02m Charlotte (CLT), United States
12:18
2026-10-30
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces

Recommended hotels in Seattle

Stay options near the arrival city for the same travel date.

Search hotels
United Airlines
United Airlines
UA-1414
06:00
2026-10-30
BOSTON (BOS)Logan International
9H :19 M
1 Stop
ORD · 1h 25m Chicago (ORD), United States
12:19
2026-10-30
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
AA
American Airlines
AA-397
06:27
2026-10-30
BOSTON (BOS)Logan International
10H :08 M
1 Stop
DFW · 1h 14m Dallas (DFW), United States
13:35
2026-10-30
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 3 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
AA
American Airlines
AA-397
06:27
2026-10-30
BOSTON (BOS)Logan International
11H :25 M
1 Stop
DFW · 2h 28m Dallas (DFW), United States
14:52
2026-10-30
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
AA
American Airlines
AA-2315
06:30
2026-10-30
BOSTON (BOS)Logan International
10H :17 M
1 Stop
PHX · 1h 08m Phoenix (PHX), United States
13:47
2026-10-30
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces

Up to 120 of 147 options on this route. Open the full search to see them all with every filter.

No flights match the selected filters. Clear filters or open full search.

Airfare Highlights

From flights departing on Fri, 30 Oct 2026.

Lowest fare ₹17,006 Delta Air Lines 07:55
Earliest departure ₹23,055 American Airlines 05:17
Shortest duration ₹35,479 United Airlines 09:20
Night 00:00-05:59 ₹17,755 Delta Air Lines at 05:50
Morning 06:00-11:59 ₹17,006 Delta Air Lines at 07:55
Afternoon 12:00-17:59 ₹17,006 Delta Air Lines at 15:47
Evening 18:00-23:59 ₹17,006 Delta Air Lines at 19:25

Departure & Arrival Airport Details

Boston (BOS)

Logan International

United States

GMT -5

Latitude: 42.36429977

Longitude: -71.00520325

Seattle (SEA)

Seattle/tacoma International

United States

GMT -8

Latitude: 47.449001

Longitude: -122.308998

Distance: Boston (BOS), United States to Seattle (SEA), United States - 4,005.51 km
Flights shown for 30 Oct 2026. View all flights opens the complete search result.
Route forecast

Weather in Boston and Seattle

Live forecast for both cities, 12 Oct to 15 Oct.

Departure city

Boston

Thu, 15 Oct
12°CClear skyLow 7°
64% humidity 21 km/h wind
  • Mon18° / 16°
  • Tue17° / 16°
  • Wed16° / 16°
Arrival city

Seattle

Thu, 15 Oct
17°CClear skyLow 7°
79% humidity 4 km/h wind
  • Mon13° / 8°
  • Tue13° / 7°
  • Wed16° / 7°

Forecast data from MET Norway, CC BY 4.0.

Smart travel dates

Holidays and peak dates for Seattle

Fares and hotel rates usually run higher around these dates. Booking earlier or moving your trip by a day or two often costs less.

Busiest periods: Summer travel (15 Jun – 31 Aug), Holiday season (18 Dec – 02 Jan).

  • 12OctColumbus DayMonday
  • 12OctColumbus DayMonday
  • 12OctIndigenous Peoples' DayMonday
  • 11NovVeterans DayWednesday
  • 26NovThanksgiving DayThursday
  • 25DecChristmas DayFriday

Fixed-date national holidays. Festivals that follow the lunar calendar shift each year and are not listed here, so check the exact date for your travel year.

Compare your journey

How to travel Boston to Seattle

Ways to make this trip that you can book on FlyX, compared by price and journey time.

OptionFromJourney timeAvailabilityAction
Non-stop flight Fastest₹17,0066h 17m10 flights
Connecting flight₹17,755Longer, includes a stop137 options

Air distance is about 4,006 km. 4 airlines operate this route.

Road distance and coach duration are approximate estimates from the air distance, not a timetable.

Airlines flying from Boston to Seattle

Compare fares, stops, baggage and refundability across the airlines flying this route.

United Airlines Flights

from ₹23,05564 flights
Fares from
₹23,055
Non-stop
None in these results
Departures
64 in the list above

American Airlines Flights

from ₹23,05548 flights
Fares from
₹23,055
Non-stop
2 in these results
Departures
48 in the list above

Delta Air Lines Flights

from ₹17,00631 flights
Fares from
₹17,006
Non-stop
4 in these results
Departures
31 in the list above

Alaska Airlines Flights

from ₹26,0174 flights
Fares from
₹26,017
Non-stop
4 in these results
Departures
4 in the list above

Route Overview & Flight Facts

Fastest flight duration5h 17m · United Airlines
First departure of the day05:17 · American Airlines
Last departure of the day19:25 · Delta Air Lines
Flight options found147
Direct / non-stop options10
Airport codesBoston–BOS, Seattle–SEA

Fares and timings are indicative. The exact price is confirmed with the airline when you search.

Flight Schedule, Timings & Airfare Insights

Daily Flight Schedule & Travel Duration

The search for Fri, 30 Oct found 147 flight options, 10 of them non-stop. The first flight leaves around 05:17 and the last around 19:25. The fastest flight takes about 5h 17m.

Morning vs Evening Departure Fares

Lowest fare by departure window: Morning from ₹17,006, Afternoon from ₹17,006, Evening from ₹17,006, Night from ₹17,755. These observations do not predict the cheapest departure window on other dates.

Cheapest Airfare & Best Time to Book

Search your travel dates to compare current fares. Prices change with airline seat availability.

One-Way vs Round-Trip Fare Comparison

Compare the complete cost and conditions of both options for your dates. A round-trip can have different fare and change rules from two one-way tickets. One booking may contain multiple airline PNRs; confirm baggage transfer and connection protection for separate tickets.

Online Web Check-In & Boarding Pass

Check the operating airline’s opening time and check-in deadline for each sector. Seat charges and availability depend on your fare. Use the airline reference and the links on Web Check-in.

How to Book Cheap Flights on FlyX

  1. 1
    Enter your travel details

    Choose one-way or round-trip, pick your dates and travellers in the search form above.

  2. 2
    Compare search results

    Sort or filter the Boston–Seattle results by price, departure time, stops and airline.

  3. 3
    Open the fare choices

    Check baggage allowance and refundability for each fare type before continuing.

  4. 4
    Review the final price

    Review the refreshed supplier fare, coupon saving and selected payment-method fee before you pay.

  5. 5
    Pay securely

    UPI, cards, net banking and wallets supported; payment and ticket issuance have separate statuses. If issuance is pending, follow the booking status; the confirmed ticket is sent after issuance.

Why Book Your Flight with FlyX?

Compare the available Boston to Seattle options by total price, stops, baggage and fare conditions. Search your dates for current availability, then review traveller details and the final price before paying.

Payment confirmation and ticket issuance are separate steps. If your booking is awaiting a PNR or ticket, follow its status and contact FlyX support when you need help. Your issued ticket contains the airline reference and itinerary. Change and cancellation charges depend on the purchased fare and any separately disclosed service fee.

Fare checked before paymentCoupon eligibility checkedBooking status trackingBooking support

Exclusive Flight Offers & Promo Coupons

Coupon codeOfferMax saving
FLYX20Up to 20% Off on Flights₹1,500

Check coupon eligibility and the final discount on the review page before you pay. View full terms.

Frequently Asked Questions

Is it worth booking Boston to Seattle flights in advance?

There is no guaranteed cheapest booking window. Compare your planned dates early, check nearby dates and consider baggage, connection time and change conditions as well as price. On the Boston to Seattle dates shown on this page, the lowest fare is on a Friday at ₹17,006. This can change from week to week.

How far is Boston from Seattle by air?

The direct air distance between Boston (BOS) and Seattle (SEA) is about 4,006 km. Actual flight time varies with the routing the airline files and with winds on the day.

Are there non-stop flights from BOS to SEA?

Yes. 10 non-stop flights are listed on this page for Boston to Seattle. Use the Stops filter to see only those.

Which airlines fly Boston to Seattle?

United Airlines, American Airlines, Delta Air Lines and Alaska Airlines are listed on this route for the dates shown here. Fares, baggage allowance and refund rules differ by airline and by fare type, so compare the fare conditions and not only the headline price.

How long is the flight from Boston to Seattle?

The quickest non-stop Boston to Seattle flight on this page takes about 6h 17m. Non-stop flights here take between 6h 17m and 6h 25m. Journeys with a stop take longer, since the total includes the layover.

What is the cheapest Boston to Seattle flight fare?

The lowest Boston to Seattle fare on this page is ₹17,006. Fares on the same dates run up to ₹36,414, depending on airline, timing and fare type. Airline prices change often, so search your dates for the current fare.

What time do Boston to Seattle flights depart?

On the dates shown here, the first departure is around 05:17 and the last around 19:25, local time at Boston. Use the departure-time filter on the results above to narrow to a morning, afternoon or evening slot.

Why does the price change after clicking Book Now?

Airline seat inventory and fares change continuously. Selecting Book Now runs a live fare verification with the airline so the price you approve is the price you pay. If it has moved, you see the new figure before any payment.

Before you book this route

Check the airport codes BOS–SEA, local departure and arrival dates, and every connecting airport. Connections can have different document and baggage requirements from your final destination.

Where these fares come from

The fares, durations, stops and baggage shown here come from real airline search results for this route. They are examples for the dates on this page, not a full timetable and not a locked price. Run a search to see what is available for your own dates.

Fares shown are for departures on .

Check official travel requirements

Confirm passport, visa and transit rules for your nationality and full itinerary with the relevant government and operating airline. IATA travel-document information explains why requirements vary.

For payment, ticket issuance or a change request, see FlyX support. About FlyX.

United States travel guide for Indian travellers

Planning more than the flight? Our United States guide covers the visa process for Indian passport holders, best time to go, how long to plan for, and which places are worth the days you have. Long-haul city breaks and national parks.

Read the United States travel guide

What to Expect When Booking Your Flight

The BOS to SEA cards above show selected flight options. Airline prices and seat availability can move quickly, so the final fare is rechecked in the booking flow.

Approx route distance: 4,005.51 km.

Before you book

Compare nearby dates

The date strip opens the complete search result for the route and selected date.

Use filters

Shortlist by price, stops, departure time and refundable fare preference.

Check fare choices

Continue to Booking opens the verified fare choices, including baggage and refundability, before review.

Lowest Boston to Seattle airfare, in 30 days and in 90 days

Cheapest FareFareDateAirlineDeparture
Lowest Airfare ₹17,006 30/10/2026 Delta Air Lines 07:55
Cheapest Airfare Within 30 Days ₹16,666 07/11/2026 Delta Air Lines 07:55
Cheapest Airfare Within 90 Days ₹16,156 06/01/2027 Delta Air Lines 07:55

Book Boston to Seattle Flight Tickets on FlyX

FlyX lists each Boston to Seattle flight in these results with its fare, departure time, stops, layover airport and baggage, so you can compare air tickets side by side. To find a cheap ticket, sort by price and check what baggage the fare includes. The fare is checked with the airline again before you pay.

Boston to Seattle Flight Distance, Duration and Time

The aerial distance between Boston and Seattle is about 4,006 KM. In these results, journey times range from 5h 17m to 21h 42m. Flights with a layover take longer because the total includes the connection time.

Boston to Seattle Flight Schedule and Timing

The search for these dates returned 147 flight options, 10 of them non-stop. The first departure from Boston is at 05:17 and the last is at 19:25. Flights leave from Logan International and land at Seattle/tacoma International.

Flight Route Details & Analysis

Flight DetailsInformation
RouteBoston to Seattle
Aerial Distance4,006 KM
Flight Duration5h 17m - 21h 42m
Airport CodesBoston - BOS, Seattle - SEA
Total Flights Available147 flights10 direct137 with layovers
First Flight DepartureDeparts at 05:17
Last Flight DepartureDeparts at 19:25
Early Morning Flights (12 AM - 8 AM)52 flights3 direct49 with layovers
Morning Flights (8 AM - 12 PM)57 flights3 direct54 with layovers
Afternoon Flights (12 PM - 4 PM)26 flights1 direct25 with layovers
Evening Flights (4 PM - 8 PM)12 flights3 direct9 with layovers
Night Flights (8 PM - 12 AM)No flights in this time slot

Airport Information & Terminals

BOS: Boston Logan International Airport. Logan is close to downtown Boston compared with many US airports. Taxis, airport buses and transit work well, but winter weather and academic move-in dates can change travel ease.

SEA: Seattle-Tacoma International Airport. Sea-Tac connects to downtown by light rail, while cabs are useful for Bellevue, Redmond or late-night arrivals. Rain and freeway traffic should be part of the plan.

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