Seattle (SEA) to Boston (BOS) flights

Program	Economy	Taxes and fees
Alaska Atmos RewardsOn Alaska Airlines	12,500	$5.60
American AAdvantageOn Alaska Airlines	12,500	$5.60
Iberia ClubOn Alaska Airlines	13,000	$5.60
Qatar Airways Privilege ClubOn JetBlue Airways	13,000	$5.60
Cathay Pacific Asia MilesOn Alaska Airlines	15,000	$5.60
SAS EuroBonusOn Delta Air Lines	15,000	$56–112
Finnair PlusOn Alaska Airlines	17,500	$5.60
British Airways ClubOn Alaska Airlines	20,000	$5.60
Starlux (COSMILE)On Alaska Airlines	20,000	$38.60
Virgin Atlantic Flying ClubOn Delta Air Lines	22,000	$5.60
JAL Mileage BankOn Alaska Airlines	23,000	$5.60
Etihad GuestOn JetBlue Airways	28,000	$5.60–255.60

Business and first class prices, and 2 more programs, are in the Award Flight Pricer. Chart prices need award space on your date, so search it before you transfer points.

• 
  Alaska Airlinesoneworld · bookable with 9 programsWho books it
• 
  Delta Air LinesSkyTeam · bookable with 8 programsWho books it
• 
  JetBlue AirwaysNot in an alliance · bookable with 2 programsWho books it

• Aeromexico RewardsBooks Delta Air Lines
• Air France-KLM Flying BlueBooks Delta Air Lines
• Alaska Atmos RewardsBooks Alaska Airlines
• American AAdvantageBooks Alaska Airlines
• British Airways ClubBooks Alaska Airlines
• Cathay Pacific Asia MilesBooks Alaska Airlines
• China Eastern Eastern MilesBooks Delta Air Lines
• Delta SkyMilesBooks Delta Air Lines
• Finnair PlusBooks Alaska Airlines
• Garuda Indonesia GarudaMilesBooks Delta Air Lines
• Iberia ClubBooks Alaska Airlines
• JAL Mileage BankBooks Alaska Airlines
• JetBlue TrueBlueBooks JetBlue Airways
• Korean Air SKYPASSBooks Delta Air Lines
• Qantas Frequent FlyerBooks Alaska Airlines
• Qatar Airways Privilege ClubBooks Alaska Airlines
• SAS EuroBonusBooks Delta Air Lines
• Singapore Airlines KrisFlyerBooks JetBlue Airways
• Virgin Atlantic Flying ClubBooks Delta Air Lines

• Via Toronto (YYZ)Air Canada the whole way
  
  
  
  
• Via Minneapolis (MSP)Delta Air Lines and Sun Country Airlines the whole way
  
  
  
  
  
• Via Bozeman (BZN)Delta Air Lines the whole way
  
  
  
  
• Via Montreal (YUL)Air Canada the whole way
  
  
  
• Via Calgary (YYC)WestJet the whole way
  
  
  
• Via Milwaukee (MKE)Alaska Airlines, then Delta Air Lines, Southwest Airlines and 2 more
  
  
  
  
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• Via Detroit (DTW)Delta Air Lines the whole way
  
  
  
  
• Via Cleveland (CLE)Alaska Airlines, then JetBlue Airways and Delta Air Lines
  
  
  
• Via Chicago (ORD)American Airlines, Delta Air Lines and 1 more the whole way
  
  
  
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• Via Chicago (MDW)Southwest Airlines the whole way
  
  
• Via New York (EWR)United Airlines the whole way
  
  
  
  
• Via New York (JFK)JetBlue Airways and Delta Air Lines the whole way
  
  
  
  
  
  
• Via Jackson (JAC)Alaska Airlines, then United Airlines
  
  
• Via Pittsburgh (PIT)Alaska Airlines and American Airlines, then JetBlue Airways and Delta Air Lines
  
  
  
  
• Via Vancouver (YVR)Air Canada, Alaska Airlines and 1 more, then JetBlue Airways