$125+ Cheap flights from Portland, ME to Seattle (PWM - SEA)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SEA
Jul 4 — Jul 111
Round-trip
1 adult, Economy
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Find cheap flights from Portland to Seattle with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Portland to Seattle
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Best
Last-minute
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Cheapest flights from Portland to SeattleExplore the most affordable flight options available from Portland to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 4, 2026.
Explore the most affordable flight options available from Portland to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 4, 2026.
This American Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/279:08 am
PWM
- SEA
1 stop8h 37m
American Airlines
Tue 9/15:50 am
SEA
- PWM
1 stop8h 42m
American Airlines
Deal found 6/1![American Airlines logo]()
$273
This American Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/195:24 pm
PWM
- SEA
1 stop9h 47m
American Airlines
Mon 9/288:20 am
SEA
- PWM
1 stop10h 35m
American Airlines
Deal found 6/1![American Airlines logo]()
$297
This Delta deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/12:53 pm
PWM
- SEA
1 stop11h 27m
Delta
Fri 9/1111:53 pm
SEA
- PWM
1 stop7h 56m
Delta
Deal found 5/31![Delta logo]()
$298
This American Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:09 pm
PWM
- SEA
1 stop8h 50m
American Airlines
Sat 9/125:30 am
SEA
- PWM
1 stop10h 16m
American Airlines
Deal found 6/1![American Airlines logo]()
$299
This Delta deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/62:35 pm
PWM
- SEA
1 stop10h 37m
Delta
Tue 10/2011:15 am
SEA
- PWM
1 stop9h 34m
Delta
Deal found 5/31![Delta logo]()
$315
This American Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/203:06 pm
PWM
- SEA
1 stop10h 50m
American Airlines
Sat 8/295:10 am
SEA
- PWM
1 stop9h 28m
American Airlines
Deal found 6/1![American Airlines logo]()
$334
This Delta deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/282:53 pm
PWM
- SEA
1 stop11h 27m
Delta
Tue 9/111:59 pm
SEA
- PWM
1 stop7h 46m
Delta
Deal found 6/1![Delta logo]()
$344
This Delta deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/62:35 pm
PWM
- SEA
1 stop10h 37m
Delta
Mon 10/1911:05 pm
SEA
- PWM
1 stop9h 48m
Delta
Deal found 5/31![Delta logo]()
$348
This American Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:00 am
PWM
- SEA
2 stops11h 51m
American Airlines
Tue 9/2211:57 pm
SEA
- PWM
1 stop10h 15m
American Airlines
Deal found 6/2![American Airlines logo]()
$375
Best flights from Portland to SeattleDiscover carefully curated flight deals from Portland to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 4, 2026.
Discover carefully curated flight deals from Portland to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 4, 2026.
This Southwest deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:40 am
PWM
- SEA
2 stops10h 15m
Southwest
Tue 8/2510:30 pm
SEA
- PWM
1 stop8h 25m
Southwest
Deal found 6/4![Southwest logo]()
$406
This United Airlines deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:00 am
PWM
- SEA
2 stops16h 08m
United Airlines
Sat 9/1211:00 pm
SEA
- PWM
2 stops12h 38m
United Airlines
Deal found 6/3![United Airlines logo]()
$521
This Sun Country Air deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1012:46 pm
PWM
- SEA
1 stop22h 09m
Sun Country Air
Thu 8/2011:59 pm
SEA
- PWM
1 stop8h 40m
Sun Country Air
Deal found 6/4![Sun Country Air logo]()
$675
This Delta deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1011:50 am
PWM
- SEA
2 stops13h 08m
Delta
Thu 8/209:10 am
SEA
- PWM
1 stop11h 03m
Delta
Deal found 6/1![Delta logo]()
$727
This Southwest deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/271:05 pm
PWM
- SEA
2 stops10h 40m
Southwest
Tue 9/17:10 am
SEA
- PWM
2 stops11h 00m
Southwest
Deal found 6/1![Southwest logo]()
$440
This Southwest deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/35:35 am
PWM
- SEA
2 stops11h 20m
Southwest
Tue 7/75:00 am
SEA
- PWM
2 stops10h 30m
Southwest
Deal found 6/3![Southwest logo]()
$463
This Southwest deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/303:45 pm
PWM
- SEA
2 stops11h 35m
Southwest
Sat 7/411:05 pm
SEA
- PWM
2 stops11h 45m
Southwest
Deal found 5/31![Southwest logo]()
$479
This Southwest deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:40 am
PWM
- SEA
1 stop13h 40m
Southwest
Sun 8/2310:30 pm
SEA
- PWM
1 stop8h 20m
Southwest
Deal found 6/2![Southwest logo]()
$492
This Southwest deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/13:45 pm
PWM
- SEA
2 stops11h 35m
Southwest
Sun 7/510:45 pm
SEA
- PWM
2 stops10h 35m
Southwest
Deal found 5/31![Southwest logo]()
$554
Last-minute flights from Portland to SeattleDiscover last-minute flight deals from Portland to Seattle. Data last updated June 4, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Seattle. Data last updated June 4, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/53:05 pm
PWM
- SEA
1 stop9h 30m
American Airlines
Thu 6/118:10 am
SEA
- PWM
1 stop10h 36m
American Airlines
Deal found 6/1![American Airlines logo]()
$416
This American Airlines deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/62:24 pm
PWM
- SEA
1 stop11h 35m
American Airlines
Mon 6/155:15 am
SEA
- PWM
1 stop8h 51m
American Airlines
Deal found 5/31![American Airlines logo]()
$452
This Delta deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/72:59 pm
PWM
- SEA
1 stop11h 09m
Delta
Mon 6/811:59 pm
SEA
- PWM
1 stop10h 01m
Delta
Deal found 6/1![Delta logo]()
$406
This United Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/85:15 am
PWM
- SEA
1 stop9h 36m
United Airlines
Tue 6/98:00 am
SEA
- PWM
1 stop8h 27m
United Airlines
Deal found 6/1![United Airlines logo]()
$381
This American Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/83:05 pm
PWM
- SEA
1 stop9h 30m
American Airlines
Wed 6/108:10 am
SEA
- PWM
1 stop10h 36m
American Airlines
Deal found 6/2![American Airlines logo]()
$408
This Southwest deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/303:45 pm
PWM
- SEA
2 stops10h 45m
Southwest
Tue 7/79:25 pm
SEA
- PWM
1 stop9h 30m
Southwest
Deal found 5/30![Southwest logo]()
$444
This American Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/37:24 pm
PWM
- SEA
1 stop8h 39m
American Airlines
Tue 7/75:10 am
SEA
- PWM
1 stop8h 59m
American Airlines
Deal found 6/2![American Airlines logo]()
$430
This American Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/217:24 pm
PWM
- SEA
1 stop8h 28m
American Airlines
Tue 7/2811:56 pm
SEA
- PWM
2 stops9h 39m
American Airlines
Deal found 6/2![American Airlines logo]()
$453
This American Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/287:24 pm
PWM
- SEA
1 stop8h 28m
American Airlines
Tue 8/45:10 am
SEA
- PWM
1 stop8h 59m
American Airlines
Deal found 6/2![American Airlines logo]()
$442
One-way flights from Portland to SeattleSearch for one-way flight options from Portland to Seattle. Find affordable one-way fares based on user searches. Data last updated June 4, 2026.
Search for one-way flight options from Portland to Seattle. Find affordable one-way fares based on user searches. Data last updated June 4, 2026.
This Delta deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/24:47 pm
PWM
- SEA
1 stop8h 18m
Delta
Deal found 5/31![Delta logo]()
$125
This deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/22:40 pm
PWM
- SEA
1 stop9h 24m
JetBlue
Deal found 6/1![JetBlue logo]()
$168
This United Airlines deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/245:03 pm
PWM
- SEA
1 stop8h 42m
United Airlines
Deal found 5/31![United Airlines logo]()
$179
This United Airlines deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/225:15 am
PWM
- SEA
2 stops13h 52m
United Airlines
Deal found 5/31![United Airlines logo]()
$185
This American Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/136:28 am
PWM
- SEA
1 stop10h 47m
American Airlines
Deal found 6/2![American Airlines logo]()
$190
This United Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/163:16 pm
PWM
- SEA
1 stop11h 28m
United Airlines
Deal found 6/2![United Airlines logo]()
$191
This American Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/305:36 pm
PWM
- SEA
1 stop10h 23m
American Airlines
Deal found 6/2![American Airlines logo]()
$202
This Southwest deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/22:50 pm
PWM
- SEA
2 stops11h 35m
Southwest
Deal found 5/31![Southwest logo]()
$209
This American Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/245:36 pm
PWM
- SEA
1 stop10h 23m
American Airlines
Deal found 6/2![American Airlines logo]()
$210
This American Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/147:24 pm
PWM
- SEA
1 stop8h 28m
American Airlines
Deal found 6/1![American Airlines logo]()
$213
This Southwest deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:40 am
PWM
- SEA
1 stop13h 40m
Southwest
Deal found 6/2![Southwest logo]()
$221
This American Airlines deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/63:06 pm
PWM
- SEA
1 stop10h 50m
American Airlines
Deal found 6/3![American Airlines logo]()
$224
Find flight deals from Portland to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $273 (American Airlines) |
One-way from | $125 (Delta) |
Popular in | August |
Cheapest in | November |
Average price | $611 |
Cheapflights Fare Finder
Customize your flight search to find flights from Portland to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 4, 2026.
Use the filters below to find and compare flights from Portland to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
PortlandSeattle
PWM - SEA
PWMSEA
Portland
Fri 8/21
7:40 am-2:55 pm
2 stops10h 15m
Seattle/Tacoma Intl
Tue 8/25
10:30 pm-9:55 am
1 stop8h 25m
$406
PortlandSeattle
PWM - SEA
PWMSEA
Portland
Thu 8/27
1:05 pm-8:45 pm
2 stops10h 40m
Seattle/Tacoma Intl
Tue 9/1
7:10 am-9:10 pm
2 stops11h 00m
$440
PortlandSeattle
PWM - SEA
PWMSEA
Portland
Fri 7/3
5:35 am-1:55 pm
2 stops11h 20m
Seattle/Tacoma Intl
Tue 7/7
5:00 am-6:30 pm
2 stops10h 30m
$463
PortlandSeattle
PWM - SEA
PWMSEA
Portland
Tue 6/30
3:45 pm-12:20 am
2 stops11h 35m
Seattle/Tacoma Intl
Sat 7/4
11:05 pm-1:50 pm
2 stops11h 45m
$479
PortlandSeattle
PWM - SEA
PWMSEA
Portland
Thu 8/20
7:40 am-6:20 pm
1 stop13h 40m
Seattle/Tacoma Intl
Sun 8/23
10:30 pm-9:50 am
1 stop8h 20m
$492
PortlandSeattle
PWM - SEA
PWMSEA
Portland
Tue 9/1
6:00 am-7:08 pm
2 stops16h 08m
Seattle/Tacoma Intl
Sat 9/12
11:00 pm-2:38 pm
2 stops12h 38m
$521
PortlandSeattle
PWM - SEA
PWMSEA
Portland
Wed 7/1
3:45 pm-12:20 am
2 stops11h 35m
Seattle/Tacoma Intl
Sun 7/5
10:45 pm-12:20 pm
2 stops10h 35m
$554
PortlandSeattle
PWM - SEA
PWMSEA
Portland
Mon 8/10
12:46 pm-7:55 am
1 stop22h 09m
Seattle/Tacoma Intl
Thu 8/20
11:59 pm-11:39 am
1 stop8h 40m
$675
PortlandSeattle
PWM - SEA
PWMSEA
Portland
Mon 8/10
11:50 am-9:58 pm
2 stops13h 08m
Seattle/Tacoma Intl
Thu 8/20
9:10 am-11:13 pm
1 stop11h 03m
$727
Cheapest one-way
Quickest one-way
PortlandSeattle
PWM - SEA
PWMSEA
Portland
Wed 9/2
4:47 pm-10:05 pm
1 stop8h 18m
$125
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from Portland to Seattle
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Seattle in June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Portland, Maine-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland, Maine-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland, Maine-Seattle flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Portland, Maine-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland, Maine-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Portland to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Portland with our price prediction graph.
PWM-SEA
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Portland to Seattle
How far ahead should I book a flight from Portland, Maine to Seattle?
The price you pay for your flight from Portland, Maine to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 1 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Portland, Maine to Seattle?
Currently, November is the cheapest month in which you can book a flight from Portland, Maine to Seattle (average of $375). Flying from Portland, Maine to Seattle in August is currently the most expensive (average of $651). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Portland, Maine to Seattle?
Reviews of airlines servicing Seattle
Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated June 4, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from Portland to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Overall
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Entertainment
7.5
Overall
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Entertainment
7.5
Overall
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Entertainment
7.5
Overall
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Entertainment
7.5
Overall
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Entertainment
7.5
Overall
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Related info for your journey
Find useful and relevant information for your journey from Portland to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Tacoma
Lacey
Ocean Shores
Leavenworth
Olympia
Edmonds
Snoqualmie
Tumwater
Tukwila
Puyallup
Kent
Lynnwood
Renton
Ellensburg
Fife
Lakewood
Issaquah
Marysville
Shoreline
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Portland and Seattle flights
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Top 5 airlines flying from Portland to Seattle
Discover the top 5 airlines that operate flights from Portland to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$155 | Average$399 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$168 | Average$416 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$285 | Average$499 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$296 | Average$467 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$405 | Average$534 | FlexibilityNo cancel fee | On-time63% |