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Cheap Flights from Boston to Seattle, WA, United States - BOS to SEA

Popular flights from Boston to Seattle

We’ve got the inside scoop on finding the best time to fly for the best price. Not sure when to travel for your next vacation? Find details below on when-to-fly and when-to-buy.

Alaska Airlines
Departure Date Return Date Lowest Price
May 6, 2016 May 14, 2016 $292
American Airlines
Departure Date Return Date Lowest Price
May 17, 2016 May 24, 2016 $309
Jun 2, 2016 Jun 6, 2016 $309
JetBlue Airways
Departure Date Return Date Lowest Price
May 5, 2016 May 14, 2016 $294
Sun Country Airlines
Departure Date Return Date Lowest Price
Jun 2, 2016 Jun 6, 2016 $275
United Airlines
Departure Date Return Date Lowest Price
May 17, 2016 May 23, 2016 $301

How Much Does it Cost to Fly from Boston to Seattle (BOS to SEA)?

We have collected flight cost data from across the web for travel from Boston to Seattle, and have found the average flight price for this trip to be $287.

When Can I Buy the Cheapest Flight from Boston to Seattle (BOS to SEA)?

Airlines can adjust prices for plane tickets from Boston to Seattle based on the day and time that you decide to book your flight. We have collected data from all airlines, and have discovered that the best days to book flights are Tuesdays, Wednesdays, and Saturdays. Read our article to find more information about the best time to buy airline tickets.

How far in advance should you book flights from Boston to Seattle

The chart below shows up-to-date information regarding how far in advance a flight from Boston to Seattle should be booked.

Non Stop versus 1-Stop
Advanced PurchaseNon StopOne Stop
< 7 days $292 $304
7-14 days $308 $280
14-21 days $309 $276
21-30 days $353 $276
30-60 days $323 $275
60-90 days $503 $363
90+ days $319 $309

Cheapest Day To Fly from Boston to Seattle

The chart below shows up-to-date information regarding the cheapest days to fly from Boston to Seattle.

Monday Tuesday Wednesday Thursday Friday Saturday Sunday
$276 $276 $276 $275 $276 $276 $360

Lowest Fares Chart By Month from Boston to Seattle

The chart below shows the lowest fare by month when flying from Boston to Seattle.

Month Origin Destination Carrier Depart Date Return Date Stops Price
May Boston Seattle Sun Country 5/17/16 5/23/16 1 $276
June Boston Seattle Sun Country 6/2/16 6/6/16 1 $275
July Boston Seattle United 7/8/16 7/18/16 1 $363
August Boston Seattle United 8/23/16 8/30/16 1 $331
September Boston Seattle Alaska 9/15/16 9/27/16 1 $309
October Boston Seattle American 10/1/16 10/4/16 1 $310
November Boston Seattle American 11/9/16 11/15/16 1 $310
December Boston Seattle American 12/18/16 12/28/16 1 $316

Cheapest Weekend Non-Stop Flights for the Next 30 Days from Boston to Seattle

If you're ready to take a trip in the next 30 days and want to fly on the weekend, you might be wondering which weekend is the cheapest to fly. The chart below shows up-to-date data regarding weekend flight prices from Boston to Seattle.

Next 30 Days

SunMonTueWedThuFriSat
1 2 3 4 5 6 7
$387
8 9 10 11 12 13 14
$387 $403
15 16 17 18 19 20 21
$403 $309
22 23 24 25 26 27 28
$309 $366
29 30 31 1 2 3 4
$366 $323
5 6 7 8 9 10 11
$323

Non-Stop vs Connecting Flights from Boston to Seattle (BOS to SEA)

Your Boston to Seattle flight can be significantly cheaper by choosing a multi-stop airline ticket. Although these connecting flights sacrifice some convenience, on average, travelers save 20%-60% when they choose to fly multi-stop versus a direct flight.

The average price for connecting flights from Boston to Seattle is $346.

The average price for non-stop flights from Boston to Seattle is $384.

The chart below shows up to date information regarding non-stop flights from Boston to Seattle.

Nonstop Flight Details from Boston to Seattle
CarrierMonTueWedThuFriSatSunEarliest FlightLatest Flight
Alaska 3 3 3 3 3 3 2 07:00 19:00
JetBlue 2 2 2 2 2 2 2 07:05 19:25
Delta 1 1 1 1 1 1 1 07:00 07:00

Round Trip vs One Way Flights from Boston to Seattle (BOS to SEA)

We have found that there is often no price difference between buying a round trip flight versus a one way flight. Increased flexibility is the main benefit when it comes to buying a one way flight from Boston to Seattle. However, booking a round trip flight can be a simpler process. You can compare round trip and one way flights by using our flight comparison.

The average price for one way flights from Boston to Seattle is $152.

The average price for round trip flights from Boston to Seattle is $346.

More Cheap Flights

FlightsAirlineLowest Price
New York to Seattle American, Alaska, JetBlue, Sun Country, United, Virgin America $304
Newark to Seattle American, Alaska, JetBlue, United, Virgin America $304
Hartford to Seattle American, Alaska, United $438
Providence to Seattle American, Alaska, United $310
Burlington to Seattle American, Alaska, United $394
Manchester to Seattle American, United $374
Portland to Seattle American, Alaska, JetBlue, United $393
Albany to Seattle American, Alaska, United $365
Westchester County to Seattle American, Alaska, United $497
Bangor to Seattle American, Alaska, United $492
Long Island MacArthur to Seattle American, United $360
Newburgh to SeattleCheck Dates
New Haven to Seattle American $440
Nantucket to Seattle American, JetBlue, United Check Dates
New York to Los Angeles American, Alaska, JetBlue, Spirit, Sun Country, United, Virgin America $209
New York to Chicago American, Alaska, JetBlue, Spirit, United $94
New York to San Francisco American, Alaska, JetBlue, Sun Country, United, Virgin America $271
New York to Las Vegas American, Alaska, JetBlue, Spirit, United, Virgin America $231
New York to Vancouver American, Air Canada, Alaska, JetBlue, Cathay, Frontier, Spirit, Porter, Sun Country, United, Virgin America, WestJet, Great Lakes $362
New York to London Aegean, American, Air Berlin, Air France, Alaska, Finnair, Alitalia, JetBlue, British Airways, airBaltic, Condor, OpenSkies, Aer Lingus, Iberia, Meridiana, KLM, Kuwait, Luxair, Lufthansa, LOT, Thomas Cook, Czech, Austrian, TAROM, SATA, XL Airways, SAS, Brussels, Tap Portugal, United, Air Europa, Virgin Atlantic, City Jet, Great Lakes $648
New York to Portland American, Alaska, JetBlue, Sun Country, United, Virgin America $322
New York to Atlanta American, Alaska, Frontier, Spirit, United $161
New York to Dallas - Ft Worth American, Alaska, JetBlue, Spirit, United, Virgin America $117
Boston to Portland American, Alaska, JetBlue, Spirit, Sun Country, United, Virgin America $277
New York to Denver American, Alaska, JetBlue, Frontier, Spirit, Sun Country, United $178
New York to Paris American, Air Berlin, Air France, Finnair, Alitalia, JetBlue, British Airways, airBaltic, Condor, OpenSkies, Aer Lingus, Iberia, Meridiana, KLM, Lufthansa, LOT, Thomas Cook, Czech, Austrian, SATA, XL Airways, SAS, Brussels, Corsair, Tap Portugal, United, Air Europa, Virgin Atlantic, City Jet, Great Lakes $590
New York to Orlando American, Alaska, JetBlue, Spirit, United $124
Boston to Vancouver Cape Air, American, Air Canada, Alaska, JetBlue, Frontier, Spirit, Sun Country, Air Transat, United, Virgin America, WestJet $317
New York to Miami American, Frontier, United $107
New York to Toronto American, Air Canada, Alaska, JetBlue, Spirit, Porter, United, Virgin America, WestJet $175

Airlines Flying from Boston to Seattle (BOS to SEA)

Below are the different airlines that fly from Boston to Seattle with the average price of their plane tickets. Just remember that different airlines offer different levels of comfort and service, so consider convenience when choosing your airline.

Below is the full flight schedule summary of the next 30 days for flights from Boston to Seattle.

Boston to Seattle
Airline Connections Mon Tue Wed Thu Fri Sat Sun
American JFK X X X X X X X
Alaska - X X X X X X X
Alaska PDX X X X X X X X
JetBlue - X X X X X X X
JetBlue JFK X X X X X X X
Delta - X X X X X X X
Delta DTW X X X X X X X
Sun Country MSP X X X X X X X
United EWR X X X X X X X
Virgin America SFO X X X X X X X
Southwest BWI X X X X X X X

Airports for Your Route

These pages contain information about the major airports in Boston and Seattle, so you can feel comfortable knowing how to get around whether you are about to take off or you just landed.

Boston to Seattle Flight Questions

Below are some common questions that asked about this flight route:

Question: How long is a direct flight from Boston to Seattle?
Answer: The average Boston to Seattle flight time is 6 hours and 11 minutes.
Question: How many miles are there between Boston and Seattle?
Answer: The distance from Boston to Seattle is 2488 miles.
Question: How common are direct flights from Boston to Seattle?
Answer: There are 41 direct flights from Boston to Seattle.
Question: What is the most popular airline for non-stop flights from Boston to Seattle?
Answer: Alaska Airlines provides 48% of the non-stop flights between Boston and Seattle.
Question: What are the most popular connecting cities when flying from Boston to Seattle?
Answer: New York, NY
Boston (BOS) To Seattle, WA (SEA) Flights: Cheap Flights From Boston To Seattle | FareCompare.