Cheap flights from Portland, Maine to Seattle from $123
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to Seattle departing on 10/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Fly from
Fly to
Route
Depart
Return
PortlandSeattle
PWM Portland - SEA Seattle/Tacoma Intl
PWMSEA
Portland
Wed 11/11
12:50 pm-8:20 pm
1 stop10h 30m
Seattle/Tacoma Intl
Sat 11/14
11:34 pm-11:35 am
1 stop9h 01m
PortlandSeattle
PWM Portland - SEA Seattle/Tacoma Intl
PWMSEA
Portland
Tue 12/8
12:15 pm-8:31 pm
1 stop11h 16m
Seattle/Tacoma Intl
Mon 12/14
11:39 pm-11:42 am
1 stop9h 03m
PortlandSeattle
PWM Portland - SEA Seattle/Tacoma Intl
PWMSEA
Portland
Thu 10/29
3:41 pm-9:39 pm
1 stop8h 58m
Seattle/Tacoma Intl
Wed 11/4
5:05 am-4:02 pm
1 stop7h 57m
PortlandSeattle
PWM Portland - SEA Seattle/Tacoma Intl
PWMSEA
Portland
Wed 11/11
4:03 pm-11:00 pm
1 stop9h 57m
Seattle/Tacoma Intl
Sat 11/14
11:45 am-12:19 am
1 stop9h 34m
PortlandSeattle
PWM Portland - SEA Seattle/Tacoma Intl
PWMSEA
Portland
Thu 12/3
4:53 pm-10:04 pm
1 stop8h 11m
Seattle/Tacoma Intl
Mon 12/7
11:15 pm-11:57 am
1 stop9h 42m
PortlandSeattle
PWM Portland - SEA Seattle/Tacoma Intl
PWMSEA
Portland
Wed 11/11
3:40 pm-9:39 pm
1 stop8h 59m
Seattle/Tacoma Intl
Sat 11/14
8:30 am-11:21 pm
2 stops11h 51m
PortlandSeattle
PWM Portland - SEA Seattle/Tacoma Intl
PWMSEA
Portland
Fri 12/4
12:45 pm-11:30 pm
2 stops13h 45m
Seattle/Tacoma Intl
Fri 12/11
12:15 am-2:45 pm
2 stops11h 30m
PortlandSeattle
PWM Portland - SEA Seattle/Tacoma Intl
PWMSEA
Portland
Wed 11/11
12:45 pm-10:50 pm
2 stops13h 05m
Seattle/Tacoma Intl
Fri 11/13
12:15 am-2:45 pm
2 stops11h 30m
PortlandSeattle
PWM Portland - SEA Seattle/Tacoma Intl
PWMSEA
Portland
Wed 11/18
12:50 pm-2:45 pm
2 stops28h 55m
Seattle/Tacoma Intl
Thu 11/19
9:28 pm-10:38 am
1 stop10h 10m
PortlandSeattle
PWM Portland - SEA Seattle/Tacoma Intl
PWMSEA
Portland
Wed 11/18
12:50 pm-9:29 pm
1 stop11h 39m
Seattle/Tacoma Intl
Thu 11/19
9:28 pm-10:38 am
1 stop10h 10m
See travel insights to Seattle from
How to get the cheapest flight ticket from Portland, Maine to Seattle
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Portland, Maine and Seattle?
Prices are currently low for flights on this route.
Typical prices usually range from $380 to $568.The lowest price recently found on this route was $245.
What is the cheapest month to fly to Seattle?
In general, January is the cheapest month to fly from Portland, Maine to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $378. If you don’t want to visit Seattle in January, then you should wait until November to fly from Portland, Maine, when ticket prices are also cheap, with an average price of $379.
How far in advance should I book a flight from Portland, Maine to Seattle?
You are more likely to see cheaper flights to Seattle from Portland, Maine when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $474 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Portland, Maine for as low as $325 on momondo.
What is the cheapest airline that flies from Portland to Seattle/Tacoma Intl?
Delta and United Airlines are the most popular carriers operating from Portland to Seattle/Tacoma Intl
What airlines fly to Seattle?
Delta, Alaska Airlines and JetBlue are the top three most popular airlines that fly to Seattle from Portland, Maine according to our data. Delta is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 7 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.
Which airport is the most popular layover for flights between Portland, Maine and Seattle?
New York (JFK) was the most common stop: 43% of momondo users choosing 1-stop flights on this route connected there.
Which layover airport offers the lowest fares from Portland, Maine to Seattle?
Flights via Chicago (ORD) offer the lowest average round-trip price of $335.
Which layover airport has the shortest travel time from Portland, Maine to Seattle?
Flights connecting via New York (JFK) have the shortest average one-way travel time: 9h 19m.
Which layover airport has the shortest connection time from Portland, Maine to Seattle?
Charlotte (CLT) has the shortest average layover time for this route: 2h 21m.
When to book flights from Portland, Maine to Seattle
Cheap Portland, Maine to Seattle (PWM to SEA) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to Seattle
Frequently asked questions about flying from Portland, Maine to Seattle
How far is Portland to Seattle/Tacoma Intl by plane?
A flight from Portland to Seattle/Tacoma Intl will travel around 2481.6 mi. Flights usually cover this in 8h 11m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Portland Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Portland Airport to Seattle/Tacoma Intl Airport refresh daily.
How many operators does momondo search for flights from Portland Airport to Seattle/Tacoma Intl Airport?
There are 4 operators available for flights from Portland Airport to Seattle/Tacoma Intl Airport as of October 2026.
How old do you have to be to fly from Portland Airport to Seattle/Tacoma Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Portland, Maine to Seattle?
momondo data reveals that the most frequently booked airline on the route from Portland, Maine to Seattle is American Airlines, representing 44% of all bookings. The subsequent popular airlines are United Airlines at 30%, Delta at 19%, and Southwest at 6%.
Best airlines flying from Portland, Maine to Seattle
Compare and see reviews for airlines that fly from Portland, Maine to Seattle with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $155 | Free Cancellation | Rating 7.8 8,641 reviews | |||
| PriceFrom $277 | Free Cancellation | Rating 7.0 12,145 reviews | |||
| PriceFrom $298 | Free Cancellation | Rating 7.4 10,319 reviews | |||
| PriceFrom $405 | Free Cancellation | Rating 7.9 4,221 reviews |
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Portland to Seattle?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Portland to Seattle. momondo saves you time and could save you money on your trip.
Can I find flights from Portland to Seattle with flexible booking policies on momondo?
momondo does allow users to show only those flights to Seattle from Portland which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Portland to Seattle?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seattle from Portland.
I’m not ready to book a flight from Portland to Seattle right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Portland to Seattle now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seattle and let you know when they change.