Cheap flights from Boise to Seattle

Flights overview

Useful information for finding cheap flights from Boise to Seattle and booking your next trip
Cheapest round-trip flights $187
Delta Nonstop 2 hr Sat, Jun 6 — Sun, Jun 7
The cheapest round-trip flight from Boise to Seattle is currently $187
Cheapest one-way flight $99
United 1 stop 9 hr Wed, Jun 3
The cheapest one-way flight from Boise to Seattle is currently $99
Last-minute weekend getaway $347
Alaska 1 stop 18 hr Sat, May 9 — Sun, May 10
The cheapest last-minute weekend getaway from Boise to Seattle is currently $347
Cheapest business class flights $337
Alaska Nonstop 2 hr Sat, Jun 6 — Sun, Jun 7
The cheapest business class round-trip flight from Boise to Seattle is currently $337
Fastest flight 1 hr 33 min The fastest nonstop flight from Boise to Seattle takes 1 hr 33 min
Nonstop flights Every day There are direct flights on this route every day.

When is the cheapest time to fly?

The cheapest month to fly from Boise to Seattle is typically January. The most expensive month to fly is typically June.
January
Cheapest
Typical prices: $95–385
June
Most expensive
Typical prices: $195–370

Popular airlines from Boise to Seattle

  • Alaska
    Nonstop
    from $187
    Typical price: $115–390
    56 weekly nonstop flights
    BOI - SEA Every day
    705 weekly connecting flights
    BOI - SEA Every day
  • Delta
    Nonstop
    from $187
    Typical price: $115–390
    48 weekly nonstop flights
    BOI - SEA Every day
  • United
    from $207
    Typical price: $210–520
    183 weekly connecting flights
    BOI - SEA Every day
  • Southwest
    from $207
    Typical price: $175–435
    122 weekly connecting flights
    BOI - SEA Every day
  • American
    from $453
    Typical price: $420–890
    51 weekly connecting flights
    BOI - SEA Every day
  • Frontier
    from $225
    Typical price: $180–490
    3 weekly connecting flights
    BOI - SEA Every Thu

Popular airports near Boise

  • Boise Airport (BOI)
    Boise United States 19 min 3 mi
  • Friedman Memorial Airport (SUN) (SUN)
    Sun Valley United States 2 hr 16 min 96 mi
  • Magic Valley Regional Airport (TWF)
    Twin Falls United States 2 hr 9 min 116 mi
  • Pocatello Regional Airport (PIH)
    Pocatello United States 3 hr 16 min 188 mi

Popular airports near Seattle

  • Seattle-Tacoma International Airport (SEA)
    Seattle United States 18 min 11 mi
  • Portland International Airport (PDX)
    Portland United States 2 hr 44 min 140 mi
  • Paine Field (PAE)
    Everett United States 31 min 21 mi
  • King County International Airport - Boeing Field (BFI)
    Seattle United States 11 min 5 mi

Frequently asked questions about flying from Boise to Seattle

The cheapest flights from Boise to Seattle are usually in January. Typical ticket prices in January range from $95 to $385.
The cheapest round-trip flight from Boise to Seattle recently found on Google Flights was with Delta from $187. The cheapest one-way flight was with United from $99.

Some of the cheapest round-trip deals we found with different airlines:
  • The cheapest Alaska flight from Boise to Seattle is $187, flying from Jun 6 to Jun 7.
  • The cheapest Delta flight from Boise to Seattle is $187, flying from Jun 6 to Jun 7.
  • The cheapest United flight from Boise to Seattle is $207, flying from May 30 to Jun 1.
  • The cheapest Southwest flight from Boise to Seattle is $207, flying from Jun 6 to Jun 7.
  • The cheapest American flight from Boise to Seattle is $453, flying from May 30 to May 31.
  • The cheapest Frontier flight from Boise to Seattle is $225, flying from May 28 to Jun 1.
The cheapest round-trip flight from Boise to Seattle starts at $187 from Sat, Jun 6 to Sun, Jun 7. The cheapest one-way flight starts at $99 and departs on Wed, Jun 3.
1 hr 33 min is the shortest flight time from Boise to Seattle.
Most visitors come May–Sep, a period encompassing events such as the Seattle International Film Festival (May); Seafair (Jul), a summer festival including boat races, marathons and parades; and Bumbershoot (Sep), an international music and arts festival. Rainy season is Nov–May, though rain is possible year-round.
It's easy to use Google Flights to find the cheapest days to fly from Boise to Seattle.
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.

You can also turn on price tracking to get alerts if the price changes for a route or flight.
What counts as the best airline for your flights from Boise to Seattle really depends on your individual needs. You may have a favorite carrier or a loyalty program you like, but price, convenience, and airports served also come into play. Flexibility and booking terms – Can you change flights if you want to stay longer or get a refund if you have to postpone your trip? – are also factors that help determine which airline is best to fly from Boise to Seattle.

In terms of nonstop flights, Alaska is the most popular. Alaska offers 56 nonstop flights and 705 connecting flights per week. Alaska flies from Boise Airport (BOI) to Seattle-Tacoma International Airport (SEA) .

Other popular airlines flying from Boise to Seattle are:
  • Delta offers 48 nonstop flights per week. Delta flies from Boise Airport (BOI) to Seattle-Tacoma International Airport (SEA) .
  • United offers 183 connecting flights per week. United flies from Boise Airport (BOI) to Seattle-Tacoma International Airport (SEA) .
  • Southwest offers 122 connecting flights per week. Southwest flies from Boise Airport (BOI) to Seattle-Tacoma International Airport (SEA) .
  • American offers 51 connecting flights per week. American flies from Boise Airport (BOI) to Seattle-Tacoma International Airport (SEA) .
  • Frontier offers 3 connecting flights per week. Frontier flies from Boise Airport (BOI) to Seattle-Tacoma International Airport (SEA) .
The number of connecting flights refers to distinct flights with at least one stop between Boise and Seattle.
The cheapest round-trip flight from Boise to Seattle recently found on Google Flights was with Delta from $187. The cheapest one-way flight was with United from $99.

Some of the cheapest round-trip deals we found with different airlines:
  • The cheapest Alaska flight from Boise to Seattle is $187, flying from Jun 6 to Jun 7.
  • The cheapest Delta flight from Boise to Seattle is $187, flying from Jun 6 to Jun 7.
  • The cheapest United flight from Boise to Seattle is $207, flying from May 30 to Jun 1.
  • The cheapest Southwest flight from Boise to Seattle is $207, flying from Jun 6 to Jun 7.
  • The cheapest American flight from Boise to Seattle is $453, flying from May 30 to May 31.
  • The cheapest Frontier flight from Boise to Seattle is $225, flying from May 28 to Jun 1.
Alaska and Delta fly direct from Boise to Seattle.
  • There are 56 Alaska direct flights from Boise to Seattle per week. Flights are available every day.
  • There are 48 Delta direct flights from Boise to Seattle per week. Flights are available every day.
Use the Stops filter while searching for flights, to see only nonstop options in your results.
The cheapest last-minute deal between Boise and Seattle at price $347 is offered by Alaska from Sat, May 9 to Sun, May 10.
Alaska and Delta fly direct from Boise to Seattle.
  • There are 56 Alaska direct flights from Boise to Seattle per week. Flights are available every day.
  • There are 48 Delta direct flights from Boise to Seattle per week. Flights are available every day.
Use the Stops filter while searching for flights, to see only nonstop options in your results.
There are direct flights from Boise to Seattle on a daily basis.
The cheapest direct (nonstop) round-trip flights between Boise and Seattle start at $187 from Sat, Jun 6 to Sun, Jun 7 with Delta.
It's easy to find nonstop flights with Google Flights! Once you've searched for flights from Boise to Seattle, just select the nonstop flights only option in the 'Stops’ filter in the search form and view all available direct flights and their prices.
The cheapest business class round-trip flights between Boise and Seattle start at $337 from Sat, Jun 6 to Sun, Jun 7 with Alaska.
The cheapest economy class round-trip flights between Boise and Seattle start at $187 from Sat, Jun 6 to Sun, Jun 7.
To book business class trips from Boise to Seattle, look for the default Economy selection at the top, and change it to your desired cabin class such as Premium Economy, Business Class, or First Class. You can then select your departure and arrival dates, consider available options, and book your business travel.

You can also adjust the trip type to view one-way fares.
The best last-minute getaway deal for the next weekend between Boise and Seattle starts at $347 from Sat, May 9 to Sun, May 10 with Alaska.
The cheapest last-minute deal between Boise and Seattle at price $347 is offered by Alaska from Sat, May 9 to Sun, May 10.
To find last-minute flight deals from Boise to Seattle, start by entering the city names, select the desired departure and return dates, and hit the Search button to view flight options.

You can check for last-minute flights for the same day or adjust the trip type to see one-way fares.

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Popular trips from Boise

  1. Paris
    $915
    Oct 22 — Oct 25
    2 stops 16 hr 40 min Alaska, Condor
  2. Phoenix
    $125
    Oct 30 — Nov 2
    Nonstop 2 hr 5 min Allegiant
  3. Seattle
    $187
    May 30 — Jun 1
    Nonstop 1 hr 38 min Alaska
  4. Boston
    $285
    Jun 6 — Jun 8
    1 stop 8 hr 5 min Delta

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