S$141 Cheap Flights from Boise to Seattle

View S$141 flight on Wed, 3 Jun, 2026Opens in a new window

Popular airlines from Boise Airport (BOI) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Boise to Seattle (BOI-SEA)

Prices were available within the past 7 days and start at S$141 for one-way flights and S$652 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 18 Apr - Sun, 19 Apr
BOI
Boise
SEA
Seattle
S$652 Return, found 1 day ago
S$652
Return
found 1 day ago
Select Delta flight, departing Sat, 18 Apr from Boise to Seattle, returning Sun, 19 Apr, priced at S$652 found 1 day ago
Delta
Sat, 18 Apr - Sun, 19 Apr
BOI
Boise
SEA
Seattle
S$723 Return, found 1 day ago
S$723
Return
found 1 day ago
Select Delta flight, departing Sat, 18 Apr from Boise to Seattle, returning Sun, 19 Apr, priced at S$723 found 1 day ago
Delta
Sat, 18 Apr - Sun, 19 Apr
BOI
Boise
SEA
Seattle
S$853 Return, found 1 day ago
S$853
Return
found 1 day ago
Select Delta flight, departing Sat, 18 Apr from Boise to Seattle, returning Sun, 19 Apr, priced at S$853 found 1 day ago
United
Sat, 18 Apr - Sun, 19 Apr
BOI
Boise
SEA
Seattle
S$943 Return, found 1 day ago
S$943
Return
found 1 day ago
Select United flight, departing Sat, 18 Apr from Boise to Seattle, returning Sun, 19 Apr, priced at S$943 found 1 day ago
Delta
Sat, 18 Apr - Sun, 19 Apr
BOI
Boise
SEA
Seattle
S$987 Return, found 1 day ago
S$987
Return
found 1 day ago
Select Delta flight, departing Sat, 18 Apr from Boise to Seattle, returning Sun, 19 Apr, priced at S$987 found 1 day ago
Delta
Sat, 18 Apr - Sun, 19 Apr
BOI
Boise
SEA
Seattle
S$1,013 Return, found 1 day ago
S$1,013
Return
found 1 day ago
Select Delta flight, departing Sat, 18 Apr from Boise to Seattle, returning Sun, 19 Apr, priced at S$1,013 found 1 day ago
Delta
Sat, 18 Apr - Sun, 19 Apr
BOI
Boise
SEA
Seattle
S$1,070 Return, found 1 day ago
S$1,070
Return
found 1 day ago
Select Delta flight, departing Sat, 18 Apr from Boise to Seattle, returning Sun, 19 Apr, priced at S$1,070 found 1 day ago
Delta
Sat, 18 Apr - Sun, 19 Apr
BOI
Boise
SEA
Seattle
S$1,077 Return, found 1 day ago
S$1,077
Return
found 1 day ago
Select Delta flight, departing Sat, 18 Apr from Boise to Seattle, returning Sun, 19 Apr, priced at S$1,077 found 1 day ago
Delta
Sat, 18 Apr - Sun, 19 Apr
BOI
Boise
SEA
Seattle
S$1,084 Return, found 1 day ago
S$1,084
Return
found 1 day ago
Select Delta flight, departing Sat, 18 Apr from Boise to Seattle, returning Sun, 19 Apr, priced at S$1,084 found 1 day ago
American Airlines
Sat, 18 Apr - Sun, 19 Apr
BOI
Boise
SEA
Seattle
S$1,435 Return, found 1 day ago
S$1,435
Return
found 1 day ago
Select American Airlines flight, departing Sat, 18 Apr from Boise to Seattle, returning Sun, 19 Apr, priced at S$1,435 found 1 day ago

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

April is typically the cheapest month to fly

From S$102 - S$153 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$652. 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.
Return price
S$651
Distance
636 km

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