✈ EconoMile

Compare Airline Fares & Calculate Miles

Flights from Seattle to Boston

Compare 25 flight options on JAL

* Based on 2374 flight price data points (fetched: 2026-02-14 〜 2026-02-22). Not real-time data and may not cover all departure dates. Please check the airline's official website for the latest fares and availability.

Lowest Fare$272.00
Flight Time5h 23m - 15h 51m
StopsNonstop available

Fares by Cabin Class

Economy$272 ~ $3,424
First$457 ~ $4,337

Available Route Options

25 different routing options available for this route

Outbound/ReturnFlight TimeStopsEconomyFirst
OutboundSEA Seattle → BOS Boston
ReturnBOS Boston → SEA Seattle
5h 23m6h 22m
NonstopNonstop
$272~$1,912~
OutboundSEA Seattle → PDX → BOS Boston
ReturnBOS Boston → SEA Seattle
7h 5m6h 22m
1stopNonstop
$432~-
OutboundSEA Seattle → BOS Boston
ReturnBOS Boston → PDX → SEA Seattle
5h 23m8h 33m
Nonstop1stop
$408~$457~
OutboundSEA Seattle → BOS Boston
ReturnBOS Boston → ORD Chicago → SEA Seattle
5h 23m8h 33m
Nonstop1stop
$598~$1,873~
OutboundSEA Seattle → ORD Chicago → BOS Boston
ReturnBOS Boston → SEA Seattle
8h6h 22m
1stopNonstop
$492~$692~
OutboundSEA Seattle → BOS Boston
ReturnBOS Boston → SAN San Diego → SEA Seattle
5h 23m10h 11m
Nonstop1stop
$503~$2,027~
OutboundSEA Seattle → PDX → BOS Boston
ReturnBOS Boston → PDX → SEA Seattle
7h 5m8h 33m
1stop1stop
$501~-
OutboundSEA Seattle → PDX → BOS Boston
ReturnBOS Boston → ORD Chicago → SEA Seattle
7h 5m8h 33m
1stop1stop
$691~-

+17 more routing options available

Book on Japan Airlines Official Website→
Search real-time Seattle to Boston flights on Expedia→

Compare fares with other airlines

Compare fares from different airlines operating on this route. Click on any airline to view detailed flight information and mileage earning potential.

Loading comparison data...

Miles & Status Points Earning

(when crediting to JAL Mileage Bank)

When crediting this Japan Airlines flight to JAL Mileage Bank, you earn both FLY ON Points (for elite status) and Miles (for award tickets). Here's how they work:

  • FLY ON Points: FLY ON Points are used for elite status qualification. Accumulate enough points within a calendar year to achieve higher status tiers, which unlock benefits like lounge access, priority boarding, bonus miles, and complimentary upgrades. Status points are calculated based on fare price or flight distance depending on the airline.
  • Miles: Miles are your reward currency for free flights. Redeem accumulated miles for award tickets on the airline and its partners. Miles earned depend on flight distance and your booking class. Higher booking classes earn more miles per flight.

The "FLY ON Points/$100" and "Miles/$100" columns show earning efficiency - higher numbers mean better value for your money. Compare different cabin classes to find the best balance between comfort and mileage earning.

As a oneworld member, Japan Airlines flights can be credited to partner programs. Compare earning potential:Executive Club, AAdvantage

CabinFareFLY ON PointsFLY ON Points/$100MilesMiles/$100
Economy$272 - $3,4244,978 - 7,518154 - 18304,978 - 7,518154 - 1830
First$457 - $4,3375,074 - 10,340174 - 11275,074 - 10,340174 - 1127
Learn more about JAL Mileage Bank →

Flight Itineraries & Booking Class Details

Browse 25 available flight options from Seattle to Boston. Each itinerary shows the route, layover cities, flight duration, and detailed fare information.

📘What are booking classes?

Even within the same Economy cabin, tickets have hidden categories called "booking classes." Cheaper tickets get lower booking classes (Q, V, etc.) while expensive tickets get higher ones (Y, B, etc.). This dramatically affects how many miles you earn. On popular dates, cheaper booking classes sell out first, so closer to departure you may only find expensive fares—which do earn more miles. Click any fare to see the calculation details.

💡Smart booking tips

To maximize miles earned per dollar spent, look for fares with higher "Points/cost" or "Miles/cost" values. However, keep in mind that booking class also affects change/cancellation flexibility—cheaper fares often have stricter policies.

Flight List
SEASeattle → BOSBoston(5.4h+)BOSBoston → SEASeattle(6.4h+)
4,978 mi
Economy (Booking Class O, Q)
$272 - $627
4,978FLY ON Points794-1830 FLY ON Points/$100
4,978Miles794-1830 Miles/$100
▼
Economy (Booking Class Q)
$307 - $667
4,978FLY ON Points746-1622 FLY ON Points/$100
4,978Miles746-1622 Miles/$100
▼
Economy (Booking Class N, S)
$338 - $778
4,978FLY ON Points640-1473 FLY ON Points/$100
4,978Miles640-1473 Miles/$100
▼
Economy (Booking Class S, Q)
$387 - $2,387
4,978FLY ON Points209-1286 FLY ON Points/$100
4,978Miles209-1286 Miles/$100
▼
Economy (Booking Class V)
$517 - $887
4,978FLY ON Points561-963 FLY ON Points/$100
4,978Miles561-963 Miles/$100
▼
Economy (Booking Class L, V)
$627 - $957
4,978FLY ON Points520-794 FLY ON Points/$100
4,978Miles520-794 Miles/$100
▼
First (Booking Class K, S)
$1,912 - $2,887
5,600FLY ON Points194-293 FLY ON Points/$100
5,600Miles194-293 Miles/$100
▼
First (Booking Class J, K)
$3,142 - $3,717
8,089FLY ON Points218-257 FLY ON Points/$100
8,089Miles218-257 Miles/$100
▼
SEASeattle → PDX → BOSBoston(7.1h+)BOSBoston → SEASeattle(6.4h+)
5,150 mi
Economy (Booking Class S, S, Q)
$432 - $2,492
5,150FLY ON Points207-1192 FLY ON Points/$100
5,150Miles207-1192 Miles/$100
▼
Economy (Booking Class V)
$501 - $2,527
5,150FLY ON Points204-1028 FLY ON Points/$100
5,150Miles204-1028 Miles/$100
▼
Economy (Booking Class L, N, Q)
$520 - $2,617
5,150FLY ON Points197-990 FLY ON Points/$100
5,150Miles197-990 Miles/$100
▼
Economy (Booking Class K, N, S)
$660 - $2,805
5,182FLY ON Points185-785 FLY ON Points/$100
5,182Miles185-785 Miles/$100
▼
SEASeattle → BOSBoston(5.4h+)BOSBoston → PDX → SEASeattle(8.6h+)
5,150 mi
Economy (Booking Class N, S, S)
$408 - $778
5,150FLY ON Points662-1262 FLY ON Points/$100
5,150Miles662-1262 Miles/$100
▼
First (Booking Class S, L, L)
$457 - $2,510
5,150FLY ON Points205-1127 FLY ON Points/$100
5,150Miles205-1127 Miles/$100
▼
Economy (Booking Class O, V, V)
$467 - $810
5,150FLY ON Points636-1103 FLY ON Points/$100
5,150Miles636-1103 Miles/$100
▼
Economy (Booking Class Q, V, V)
$502 - $850
5,150FLY ON Points606-1026 FLY ON Points/$100
5,150Miles606-1026 Miles/$100
▼
Economy (Booking Class V, L, L)
$562 - $1,280
5,150FLY ON Points402-916 FLY ON Points/$100
5,150Miles402-916 Miles/$100
▼
Economy (Booking Class L)
$767 - $1,052
5,150FLY ON Points490-671 FLY ON Points/$100
5,150Miles490-671 Miles/$100
▼
First (Booking Class K, L, L)
$1,992 - $3,030
5,772FLY ON Points191-290 FLY ON Points/$100
5,772Miles191-290 Miles/$100
▼
First (Booking Class J, K, N)
$3,180 - $3,860
8,271FLY ON Points214-260 FLY ON Points/$100
8,271Miles214-260 Miles/$100
▼
SEASeattle → BOSBoston(5.4h+)BOSBoston → ORDChicago → SEASeattle(8.6h+)
5,074 mi
Economy (Booking Class N)
$598 - $1,560
5,074FLY ON Points325-849 FLY ON Points/$100
5,074Miles325-849 Miles/$100
▼
Economy (Booking Class S, K, K)
$647 - $3,007
5,719FLY ON Points190-884 FLY ON Points/$100
5,719Miles190-884 Miles/$100
▼
Economy (Booking Class V, S, S)
$697 - $1,674
5,074FLY ON Points303-728 FLY ON Points/$100
5,074Miles303-728 Miles/$100
▼
Economy (Booking Class L, S, S)
$802 - $1,744
5,074FLY ON Points291-633 FLY ON Points/$100
5,074Miles291-633 Miles/$100
▼
Economy (Booking Class O, K, K)
$1,067 - $1,484
5,719FLY ON Points385-536 FLY ON Points/$100
5,719Miles385-536 Miles/$100
▼
Economy (Booking Class Q, K, K)
$1,102 - $1,524
5,719FLY ON Points375-519 FLY ON Points/$100
5,719Miles375-519 Miles/$100
▼
First (Booking Class K, J, J)
$1,873 - $3,507
8,281FLY ON Points236-442 FLY ON Points/$100
8,281Miles236-442 Miles/$100
▼
First (Booking Class J, S, S)
$2,757 - $4,337
7,563FLY ON Points174-274 FLY ON Points/$100
7,563Miles174-274 Miles/$100
▼
SEASeattle → ORDChicago → BOSBoston(8.0h+)BOSBoston → SEASeattle(6.4h+)
5,074 mi
Economy (Booking Class Q)
$492 - $1,842
5,074FLY ON Points276-1031 FLY ON Points/$100
5,074Miles276-1031 Miles/$100
▼
Economy (Booking Class N, N, Q)
$567 - $1,873
5,074FLY ON Points271-895 FLY ON Points/$100
5,074Miles271-895 Miles/$100
▼
First (Booking Class S)
$692 - $1,952
5,074FLY ON Points260-733 FLY ON Points/$100
5,074Miles260-733 Miles/$100
▼
First (Booking Class V, V, S)
$692 - $2,012
5,074FLY ON Points252-733 FLY ON Points/$100
5,074Miles252-733 Miles/$100
▼
Economy (Booking Class Y, Y, Q)
$1,524 - $1,744
6,366FLY ON Points365-418 FLY ON Points/$100
6,366Miles365-418 Miles/$100
▼
First (Booking Class L, L, S)
$1,672 - $2,097
5,074FLY ON Points242-304 FLY ON Points/$100
5,074Miles242-304 Miles/$100
▼
First (Booking Class M, M, K)
$2,177
5,696FLY ON Points262 FLY ON Points/$100
5,696Miles262 Miles/$100
▼
First (Booking Class J, J, S)
$3,007 - $3,507
7,659FLY ON Points218-255 FLY ON Points/$100
7,659Miles218-255 Miles/$100
▼
SEASeattle → BOSBoston(5.4h+)BOSBoston → SANSan Diego → SEASeattle(10.2h+)
6,130 mi
Economy (Booking Class N, S, S)
$503 - $748
6,130FLY ON Points820-1219 FLY ON Points/$100
6,130Miles820-1219 Miles/$100
▼
Economy (Booking Class O, V, V)
$527 - $777
6,130FLY ON Points789-1163 FLY ON Points/$100
6,130Miles789-1163 Miles/$100
▼
Economy (Booking Class S, V, V)
$552 - $2,535
6,130FLY ON Points242-1111 FLY ON Points/$100
6,130Miles242-1111 Miles/$100
▼
Economy (Booking Class Q, V, V)
$562 - $817
6,130FLY ON Points750-1091 FLY ON Points/$100
6,130Miles750-1091 Miles/$100
▼
Economy (Booking Class V, S, S)
$602 - $862
6,130FLY ON Points711-1018 FLY ON Points/$100
6,130Miles711-1018 Miles/$100
▼
Economy (Booking Class L, S, S)
$667 - $937
6,130FLY ON Points654-919 FLY ON Points/$100
6,130Miles654-919 Miles/$100
▼
First (Booking Class K, V, V)
$2,027 - $3,035
6,752FLY ON Points223-333 FLY ON Points/$100
6,752Miles223-333 Miles/$100
▼
First (Booking Class J, K, K)
$3,197 - $3,772
9,528FLY ON Points253-298 FLY ON Points/$100
9,528Miles253-298 Miles/$100
▼
SEASeattle → PDX → BOSBoston(7.1h+)BOSBoston → PDX → SEASeattle(8.6h+)
5,322 mi
Economy (Booking Class S, S, V, V)
$501 - $2,614
5,322FLY ON Points204-1062 FLY ON Points/$100
5,322Miles204-1062 Miles/$100
▼
Economy (Booking Class V, V, L, L)
$570 - $2,669
5,322FLY ON Points199-934 FLY ON Points/$100
5,322Miles199-934 Miles/$100
▼
Economy (Booking Class L, N, N, N)
$589 - $2,739
5,322FLY ON Points194-904 FLY ON Points/$100
5,322Miles194-904 Miles/$100
▼
Economy (Booking Class K, N, S, S)
$704 - $2,927
5,354FLY ON Points183-761 FLY ON Points/$100
5,354Miles183-761 Miles/$100
▼
SEASeattle → PDX → BOSBoston(7.1h+)BOSBoston → ORDChicago → SEASeattle(8.6h+)
5,246 mi
Economy (Booking Class S, S, K, K)
$691 - $3,111
5,891FLY ON Points189-853 FLY ON Points/$100
5,891Miles189-853 Miles/$100
▼
Economy (Booking Class V, V, S, S)
$761 - $3,146
5,246FLY ON Points167-689 FLY ON Points/$100
5,246Miles167-689 Miles/$100
▼
Economy (Booking Class L, N, N, N)
$794 - $3,236
5,246FLY ON Points162-661 FLY ON Points/$100
5,246Miles162-661 Miles/$100
▼
Economy (Booking Class K, N, N, N)
$854 - $3,424
5,278FLY ON Points154-618 FLY ON Points/$100
5,278Miles154-618 Miles/$100
▼
SEASeattle → GEG → PDX → BOSBoston(9.5h+)BOSBoston → SEASeattle(6.4h+)
5,523 mi
Economy (Booking Class N, V, V, V)
$745 - $1,155
5,523FLY ON Points478-741 FLY ON Points/$100
5,523Miles478-741 Miles/$100
▼
Economy (Booking Class V)
$785 - $1,200
5,523FLY ON Points460-704 FLY ON Points/$100
5,523Miles460-704 Miles/$100
▼
SEASeattle → SANSan Diego → BOSBoston(9.8h+)BOSBoston → SEASeattle(6.4h+)
6,130 mi
Economy (Booking Class Q)
$367 - $2,377
6,130FLY ON Points258-1670 FLY ON Points/$100
6,130Miles258-1670 Miles/$100
▼
Economy (Booking Class V, Q, Q)
$535 - $2,617
6,130FLY ON Points234-1146 FLY ON Points/$100
6,130Miles234-1146 Miles/$100
▼
Economy (Booking Class S, S, V)
$602 - $2,527
6,130FLY ON Points243-1018 FLY ON Points/$100
6,130Miles243-1018 Miles/$100
▼
Economy (Booking Class M, N, S)
$615 - $2,797
6,130FLY ON Points219-997 FLY ON Points/$100
6,130Miles219-997 Miles/$100
▼
Economy (Booking Class L, N, S)
$685 - $1,150
6,130FLY ON Points533-895 FLY ON Points/$100
6,130Miles533-895 Miles/$100
▼
First (Booking Class K, N, S)
$1,935 - $3,035
6,393FLY ON Points211-330 FLY ON Points/$100
6,393Miles211-330 Miles/$100
▼

FAQ

You can earn between 4,978 and 10,340 Points depending on booking class. Economy: 4,978–7,518. First: 5,074–10,340.

The lowest fare starts at $272. Economy from $272. First from $457.

Yes. Alaska Airlines flights can also be credited to: FLY ON Points (JAL), Tier Points (BA), Loyalty Points (AA).

The shortest flight time is approximately 5.4h.

Boston on other airlines

ANATurkishBritish AirwaysUnitedSingaporeAmericanAlaskaQatarLufthansaCompare All

Other destinations from Seattle

VancouverLos AngelesSan FranciscoFrankfurtSingaporeDallas
OriginSEASeattleChange
↓
DestinationBOSBoston
Destinations (24)
Airline