Cheap flights from Seattle to Portland from $214 BFI, SEA → PDX
Boeing Field International Airport (BFI), Seattle-Tacoma International Airport (SEA) → Portland International Airport (PDX)
The cheapest return found recently is $250 with Alaska Airlines, 16 Dec – 27 Jan 2027, found yesterday. The cheapest one-way found recently is $214 with SeaPort Airlines, 27 Nov, found yesterday.
- Cheapest one-way found recently
- $214, SeaPort Airlines, found yesterday
- Cheapest return found recently
- $250, 16 Dec to 27 Jan 2027
- Cheapest month to fly
- December 2026, one-way fares from $150 found in the last 7 days
- Airlines with nonstop flights
- SeaPort Airlines
- Shortest nonstop flight found
- 50 min
Return
Not enough comparable prices yet for a usual return price.
Cheapest return found recently
$250
16 Dec – 27 Jan 2027 · Alaska Airlines
Seattle-Tacoma International Airport (SEA) → Portland International Airport (PDX)
Leaves 2:25 p.m. · Return leaves 10:45 a.m. · 1 h 52 min of travel, both ways together
out nonstop, back nonstop
found yesterday
Cheapest nonstop return
$250
16 Dec – 27 Jan 2027 · Alaska Airlines
Seattle-Tacoma International Airport (SEA) → Portland International Airport (PDX)
Leaves 2:25 p.m. · Return leaves 10:45 a.m. · 1 h 52 min of travel, both ways together
out nonstop, back nonstop
found yesterday
Found recently, and the cheapest we hold
$250 16 Dec – 27 Jan 2027found yesterdaySee prices for these dates
$230 16 Dec – 27 Jan 2027found 5 days agoSee prices for these dates
What have prices looked like?
Over 50 days, 24 Sept to 12 Nov, the cheapest return we saw each day was $187 to $267.
Those were the prices on those days, not today's.
Is this a good return price?
Not enough comparable prices yet: we hold return fares on 2 departure dates and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other 42-night return fares leaving within 3 days of 16 Dec to compare.
Every date we hold
4 fares on 2 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 13 Dec – 14 Dec | $245 | SeaPort Airlines | Boeing Field International Airport (BFI) → Portland International Airport (PDX) | out nonstop, back nonstop | found 5 days ago | See prices for these dates |
| 16 Dec – 27 Jan 2027 | $230 | Alaska Airlines | Seattle-Tacoma International Airport (SEA) → Portland International Airport (PDX) | out nonstop, back nonstop | found 5 days ago | See prices for these dates |
Airlines on the cheapest dates: SeaPort Airlines, Alaska Airlines.
One-way
The cheapest one-way fare on each of 5 departure dates is usually $214 to $221.
Cheapest one-way found recently
$214
27 Nov · SeaPort Airlines
Boeing Field International Airport (BFI) → Portland International Airport (PDX)
Leaves 8:15 a.m. · 50 min trip
nonstop
found yesterday
Cheapest nonstop one-way
$214
27 Nov · SeaPort Airlines
Boeing Field International Airport (BFI) → Portland International Airport (PDX)
Leaves 8:15 a.m. · 50 min trip
nonstop
found yesterday
Found recently, and the cheapest we hold
$214 27 Novfound yesterdayOpen this trip
$150 16 Decfound 3 days agoOpen this trip
What have prices looked like?
Over 50 days, 24 Sept to 12 Nov, the cheapest one-way we saw each day was $117 to $213.
At $214, the cheapest one-way found recently is above that range.
Those were the prices on those days, not today's.
Is this a good one-way price?
Compared with the cheapest one-way fare on each of 5 departure dates from 20 Nov to 16 Dec, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 27 Nov to compare.
Every date we hold
6 fares on 5 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 20 Nov | $221 | SeaPort Airlines | Boeing Field International Airport (BFI) → Portland International Airport (PDX) | nonstop | found 3 days ago | Open this trip |
| 22 Nov | $301 | SeaPort Airlines | Boeing Field International Airport (BFI) → Portland International Airport (PDX) | nonstop | found yesterday | Open this trip |
| 23 Nov | $221 | SeaPort Airlines | Boeing Field International Airport (BFI) → Portland International Airport (PDX) | nonstop | found today | Open this trip |
| 27 Nov | $214 | SeaPort Airlines | Boeing Field International Airport (BFI) → Portland International Airport (PDX) | nonstop | found yesterday | Open this trip |
| 16 Dec | $150 | SeaPort Airlines | Boeing Field International Airport (BFI) → Portland International Airport (PDX) | nonstop | found 3 days ago | Open this trip |
Which month looks cheapest?
December 2026 is the cheapest month — from $150.
Airlines on the cheapest dates: SeaPort Airlines.
Premium cabin fares from Seattle to Portland
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 16 Dec – 27 Jan 2027 in another cabin: Premium economy · Business · First
Today's prices for 27 Nov in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Seattle to Portland?
Return
Fares 90 to 179 days before departure were typically 42% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 12 Nov (50 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $387 | $307 | +71% | 10 |
| 7–13 days | $307 | $307 | +36% | 7 |
| 14–29 days | $232 | $232 | +3% | 13 |
| 30–59 days | $229 | $217 | +1% | 43 |
| 60–89 days | $264 | $187 | +17% | 14 |
| 90–179 days | $226 | $226 | Cheapest seen | 8 |
One-way
Fares 60 to 89 days before departure were typically 39% lower than 0 to 6 days before departure.
From the cheapest one-way each day between 24 Sept and 12 Nov (50 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $219 | $162 | +65% | 50 |
| 7–13 days | $216 | $210 | +62% | 50 |
| 14–29 days | $206 | $155 | +55% | 26 |
| 30–59 days | $150 | $117 | +13% | 27 |
| 60–89 days | $133 | $123 | Cheapest seen | 11 |
| 90–179 days | $146 | $121 | +10% | 24 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Everett → Portland
34 km from Seattle
$246
$4 less than flying from Seattle
16 Dec – 27 Jan 2027 · PAE → PDX · out nonstop, back nonstop
found yesterday
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Bellingham → Portland
128 km from Seattle
$178
$36 less than flying from Seattle
22 Nov · BLI → PDX · nonstop
found yesterday
Everett → Portland
34 km from Seattle
$254
$40 more than flying from Seattle
27 Nov · PAE → PDX · nonstop
found yesterday
Victoria → Portland
119 km from Seattle
C$513 (US$360)
C$208 (US$146) more than flying from Seattle
20 Nov · YYJ → PDX · 1 stop
found 3 days ago
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 16 Dec – 27 Jan 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from Seattle to Portland?
The cheapest return found recently is $250 with Alaska Airlines, 16 Dec to 27 Jan 2027, found yesterday. The cheapest return we hold, of any age, is $230 with Alaska Airlines, 16 Dec to 27 Jan 2027, found 5 days ago.
How much is a one-way flight from Seattle to Portland?
The cheapest one-way found recently is $214 with SeaPort Airlines, 27 Nov, found yesterday. The cheapest one-way we hold, of any age, is $150 with SeaPort Airlines, 16 Dec, found 3 days ago. The cheapest one-way fare on each of 5 departure dates is usually $214 to $221.
What is the cheapest month to fly from Seattle to Portland?
December 2026 is the cheapest month for a one-way, from $150, 16 Dec, found 3 days ago.
How far ahead should I book a flight from Seattle to Portland?
In 50 days of prices between 24 Sept and 12 Nov, return fares 90 to 179 days before departure were typically 42% lower than 0 to 6 days before departure. One-way fares 60 to 89 days before departure were typically 39% lower than 0 to 6 days before departure.
Is there a direct flight from Seattle to Portland?
Yes, the cheapest nonstop return found recently is $250 with Alaska Airlines, 16 Dec to 27 Jan 2027, found yesterday. The cheapest nonstop one-way found recently is $214 with SeaPort Airlines, 27 Nov, found yesterday.
How long is the flight from Seattle to Portland?
The cheapest nonstop one-way found recently, with SeaPort Airlines on 27 Nov, takes 50 min from Boeing Field International Airport (BFI) to Portland International Airport (PDX).
Which airlines have the cheapest flights from Seattle to Portland?
Between 20 Nov and 16 Dec, SeaPort Airlines has the cheapest one-way on all 5 departure dates we hold.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work