S$90 Cheap Flights from Boise to Seattle

View S$90 flight on Fri, 23 Jan, 2026Opens in a new window

Popular airlines from Boise Airport (BOI) to Seattle

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Cheap Flights from Boise to Seattle (BOI-SEA)

Prices were available within the past 7 days and start at S$90 for one-way flights and S$128 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, 23 Jan - Sun, 25 Jan
BOI
Boise
SEA
Seattle
S$128 Return, found 4 days ago
S$128
Return
found 4 days ago
Select Delta flight, departing Fri, 23 Jan from Boise to Seattle, returning Sun, 25 Jan, priced at S$128 found 4 days ago
Delta
Fri, 23 Jan - Sun, 25 Jan
BOI
Boise
SEA
Seattle
S$193 Return, found 4 days ago
S$193
Return
found 4 days ago
Select Delta flight, departing Fri, 23 Jan from Boise to Seattle, returning Sun, 25 Jan, priced at S$193 found 4 days ago
Delta
Fri, 23 Jan - Sun, 25 Jan
BOI
Boise
SEA
Seattle
S$244 Return, found 4 days ago
S$244
Return
found 4 days ago
Select Delta flight, departing Fri, 23 Jan from Boise to Seattle, returning Sun, 25 Jan, priced at S$244 found 4 days ago
Delta
Fri, 23 Jan - Sun, 25 Jan
BOI
Boise
SEA
Seattle
S$257 Return, found 4 days ago
S$257
Return
found 4 days ago
Select Delta flight, departing Fri, 23 Jan from Boise to Seattle, returning Sun, 25 Jan, priced at S$257 found 4 days ago
Delta
Thu, 23 Jul - Thu, 30 Jul
BOI
Boise
SEA
Seattle
S$280 Return, found 4 days ago
S$280
Return
found 4 days ago
Select Delta flight, departing Thu, 23 Jul from Boise to Seattle, returning Thu, 30 Jul, priced at S$280 found 4 days ago
Delta
Fri, 23 Jan - Sun, 25 Jan
BOI
Boise
SEA
Seattle
S$281 Return, found 4 days ago
S$281
Return
found 4 days ago
Select Delta flight, departing Fri, 23 Jan from Boise to Seattle, returning Sun, 25 Jan, priced at S$281 found 4 days ago
United
Fri, 23 Jan - Sun, 25 Jan
BOI
Boise
SEA
Seattle
S$295 Return, found 4 days ago
S$295
Return
found 4 days ago
Select United flight, departing Fri, 23 Jan from Boise to Seattle, returning Sun, 25 Jan, priced at S$295 found 4 days ago
United
Fri, 23 Jan - Sun, 25 Jan
BOI
Boise
SEA
Seattle
S$308 Return, found 4 days ago
S$308
Return
found 4 days ago
Select United flight, departing Fri, 23 Jan from Boise to Seattle, returning Sun, 25 Jan, priced at S$308 found 4 days ago
United
Fri, 23 Jan - Sun, 25 Jan
BOI
Boise
SEA
Seattle
S$345 Return, found 4 days ago
S$345
Return
found 4 days ago
Select United flight, departing Fri, 23 Jan from Boise to Seattle, returning Sun, 25 Jan, priced at S$345 found 4 days ago
American Airlines
Fri, 23 Jan - Sun, 25 Jan
BOI
Boise
SEA
Seattle
S$558 Return, found 4 days ago
S$558
Return
found 4 days ago
Select American Airlines flight, departing Fri, 23 Jan from Boise to Seattle, returning Sun, 25 Jan, priced at S$558 found 4 days ago

Find the cheapest month to fly from Boise (BOI) to Seattle (SEA)

January is typically the cheapest month to fly

From S$99 - S$215 per traveller.

Frequently asked questions

How much is a flight from Boise Airport (BOI) to Sea-Tac Airport?
The lowest price advertised for a round-trip journey from Boise Airport to Seattle - Tacoma Intl. Airport (SEA) is S$128. But you better move fast. This figure is taken from fares quoted within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Boise Airport to Seattle - Tacoma Intl. Airport (SEA)?
We get that your situation can change unexpectedly, so we've made it as simple as possible for you to cancel your trip online. Just visit the Customer Service Portal and follow the instructions.
How do I find cheap flights from BOI to SEA that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for BOI to SEA flights, you'll see a "no change fees" filter for you to select.
How far is the flight from BOI to SEA?
The distance from Boise Airport (BOI) (BOI) to SEA (SEA) is 640 kilometres. You'll be walking down the air bridge and collecting your bags from the carousel in no time.
Which airlines fly direct from Boise Airport (BOI) to Sea-Tac Airport?
There are a few airlines that fly directly from Boise Airport (BOI) to Sea-Tac Airport. Alaska Airlines (AS) is a great choice, offering 321 flights each month. Operating 182 flights each month on this route, Delta Air Lines (DL) is another traveller favourite.
Are Boise Airport to SEA flight tickets cheaper when they're purchased at the last minute?
Flight prices go up and down like a yo-yo, so there are no guarantees. While last-minute deals between BOI and SEA are of course possible, it also makes sense to keep a close eye on prices well before you fly. In fact, some carriers advertise their prices up to a year prior to the departure date. Expedia is continuously updating the biggest airfare bargains around, so check back often and be ready to grab your seat when the price dips.

Travel information

0
Origin airport
Boise
Destination airport
Seattle - Tacoma Intl.
Airlines serving
American Airlines, Delta, United
Return price
S$128
Distance
636 km

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Perfect flights from Boise to Seattle

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*Note: Prices may vary based on availability and are subject to change.
Perfect flights from Boise to Seattle

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