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Cheap flights from Seattle (SEA) to Portugal from $324

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 9/30. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
SEA — LIS
May 21 — May 281
From?
To?
Tue 5/21
Tue 5/28
1 adult, Economy
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How far in advance should I book a flight from Seattle to Portugal?

Users have found that booking a flight from Seattle to Portugal at least 38 days early can save you up to 46% on average compared to booking a flight this week. If booking 38 days before your flight isn’t an option for you, users have found flights from Seattle to Portugal for as little as $729 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $997 for flights departing within the next 3 days.

What is the cheapest month to fly from Seattle to Portugal?

The best pricing can be found in the month of February. Prices to Portugal from Seattle average $1,036. You can even find prices in February for less than $1,036, as users have found deals to Portugal from as low as $455. The month of June appears to be one of the more expensive times to travel to Portugal from Seattle. Flying in the targeted month can save you up to 46%.

When is the cheapest time to fly from Seattle to Portugal (SEA - PT)?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Portugal as you normally would.

Cheap United Airlines flights from Seattle to Portugal

Explore cheap flight options specifically provided by United Airlines for the route between Seattle and Portugal. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Peruse some of the lowest-priced United Airlines flights we've found from Seattle to Portugal. It's recommended that users confirm their flight details before booking.
Tue 11/511:50 pmSEA - LIS
2 stops24h 20mUnited Airlines
Wed 11/1311:00 amLIS - SEA
2 stops39h 13mUnited Airlines
Deal found 5/15$654
Tue 11/56:39 amSEA - LIS
3 stops19h 51mUnited Airlines
Tue 11/266:10 amLIS - SEA
1 stop18h 55mUnited Airlines
Deal found 5/16$664
Sat 11/211:50 pmSEA - OPO
2 stops28h 45mUnited Airlines
Tue 11/126:00 amOPO - SEA
2 stops22h 52mUnited Airlines
Deal found 5/15$683
Sun 11/1012:50 pmSEA - LIS
1 stop13h 40mUnited Airlines
Sun 11/2411:00 amLIS - SEA
2 stops32h 37mUnited Airlines
Deal found 5/15$699
Wed 10/306:39 amSEA - OPO
3 stops50h 06mUnited Airlines
Wed 11/612:30 pmOPO - SEA
2 stops40h 38mUnited Airlines
Deal found 5/16$754
Mon 10/1411:50 amSEA - OPO
1 stop13h 55mUnited Airlines
Fri 11/296:00 amOPO - SEA
2 stops47h 08mUnited Airlines
Deal found 5/16$823
Wed 7/171:37 pmSEA - PDL
1 stop12h 03mUnited Airlines
Wed 7/2411:00 amPDL - SEA
2 stops20h 49mUnited Airlines
Deal found 5/15$994
Fri 8/91:37 pmSEA - PDL
1 stop12h 03mUnited Airlines
Sun 8/2511:00 amPDL - SEA
1 stop14h 42mUnited Airlines
Deal found 5/14$1,059
Thu 6/1312:10 pmSEA - PDL
1 stop13h 30mUnited Airlines
Sun 6/2311:00 amPDL - SEA
2 stops18h 23mUnited Airlines
Deal found 5/15$1,124

Cheap American Airlines flights from Seattle to Portugal

Explore cheap flight options specifically provided by American Airlines for the route between Seattle and Portugal. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Some of the lowest-priced American Airlines flights we've found at this time heading from Seattle to Portugal. Check back soon if you're not seeing flights that suit your needs.
Tue 11/56:45 pmSEA - LIS
1 stop19h 00mAmerican Airlines
Wed 11/136:35 amLIS - SEA
2 stops22h 15mAmerican Airlines
Deal found 5/15$658
Tue 11/55:13 amSEA - LIS
2 stops20h 02mAmerican Airlines
Tue 11/2611:20 amLIS - SEA
2 stops19h 46mAmerican Airlines
Deal found 5/15$670
Thu 11/71:35 pmSEA - LIS
1 stop24h 20mAmerican Airlines
Fri 11/156:35 amLIS - SEA
2 stops22h 40mAmerican Airlines
Deal found 5/15$710
Thu 11/71:39 pmSEA - LIS
2 stops20h 16mAmerican Airlines
Fri 11/156:35 amLIS - SEA
2 stops22h 40mAmerican Airlines
Deal found 5/15$714
Sat 11/211:40 pmSEA - LIS
1 stop26h 15mAmerican Airlines
Sun 11/109:00 amLIS - SEA
2 stops19h 35mAmerican Airlines
Deal found 5/15$728
Sat 5/251:15 amSEA - LIS
2 stops23h 50mAmerican Airlines
Thu 6/611:05 amLIS - SEA
1 stop19h 24mAmerican Airlines
Deal found 5/16$1,829
Sat 5/251:15 amSEA - LIS
2 stops23h 50mAmerican Airlines
Thu 6/611:05 amLIS - SEA
2 stops19h 52mAmerican Airlines
Deal found 5/15$1,928
Sat 5/251:15 amSEA - LIS
2 stops23h 50mAmerican Airlines
Thu 6/611:05 amLIS - SEA
1 stop19h 24mAmerican Airlines
Deal found 5/15$1,929
Tue 5/211:15 amSEA - LIS
2 stops23h 50mAmerican Airlines
Tue 5/286:35 amLIS - SEA
2 stops34h 42mAmerican Airlines
Deal found 5/15$2,180

Cheap Seattle to Portugal flights in May & June 2024

Find cheap flight options from Seattle to Portugal specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Prices were last updated on May 16, 2024.
The lowest fares we've come across on flights traveling from Seattle to Portugal in May and June 2024. For more flight deals, be sure to check back very soon.
Wed 6/125:55 amSEA - LIS
3 stops20h 35mMultiple Airlines
Wed 6/197:10 amLIS - SEA
2 stops21h 11mMultiple Airlines
Deal found 5/15$906
Tue 6/115:55 amSEA - LIS
3 stops24h 45mMultiple Airlines
Thu 6/205:05 amLIS - SEA
2 stops23h 16mMultiple Airlines
Deal found 5/15$908
Tue 6/117:00 amSEA - LIS
2 stops23h 40mMultiple Airlines
Thu 6/205:05 amLIS - SEA
2 stops23h 16mMultiple Airlines
Deal found 5/15$925
Wed 6/1211:10 pmSEA - LIS
2 stops27h 20mMultiple Airlines
Wed 6/197:10 amLIS - SEA
2 stops21h 11mMultiple Airlines
Deal found 5/15$929
Tue 6/115:55 amSEA - LIS
3 stops24h 45mMultiple Airlines
Thu 6/205:05 amLIS - SEA
3 stops25h 15mMultiple Airlines
Deal found 5/15$933
Wed 6/125:55 amSEA - LIS
3 stops20h 35mMultiple Airlines
Wed 6/197:10 amLIS - SEA
3 stops23h 10mMultiple Airlines
Deal found 5/15$938
Mon 6/37:00 amSEA - LIS
2 stops31h 25mMultiple Airlines
Wed 6/1910:15 pmLIS - SEA
3 stops30h 06mMultiple Airlines
Deal found 5/15$969
Wed 6/127:40 amSEA - LIS
1 stop18h 50mMultiple Airlines
Wed 6/197:10 amLIS - SEA
2 stops21h 11mMultiple Airlines
Deal found 5/15$970
Mon 6/37:00 amSEA - LIS
2 stops31h 25mMultiple Airlines
Wed 6/197:10 amLIS - SEA
2 stops21h 11mMultiple Airlines
Deal found 5/15$973

Seattle to Portugal 2024 flight deals

Discover exclusive flight deals for travel between Seattle and Portugal in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
The lowest fares we've come across on flights traveling from Seattle to Portugal in May and June 2024. For more flight deals, be sure to check back very soon.
Tue 9/36:45 pmSEA - LIS
2 stops18h 50mMultiple Airlines
Tue 9/106:00 amLIS - SEA
2 stops22h 21mMultiple Airlines
Deal found 5/15$651
Tue 11/511:50 pmSEA - LIS
2 stops24h 20mUnited Airlines
Wed 11/1311:00 amLIS - SEA
2 stops39h 13mUnited Airlines
Deal found 5/15$654
Tue 11/59:45 amSEA - LIS
1 stop15h 35mAir Canada
Tue 11/2611:00 amLIS - SEA
2 stops42h 08mAir Canada
Deal found 5/16$657
Tue 11/56:45 pmSEA - LIS
1 stop19h 00mAmerican Airlines
Wed 11/136:35 amLIS - SEA
2 stops22h 15mAmerican Airlines
Deal found 5/15$658
Tue 11/57:12 amSEA - LIS
1 stop16h 58mMultiple Airlines
Wed 11/135:00 amLIS - SEA
1 stop15h 00mMultiple Airlines
Deal found 5/15$659
Wed 11/206:45 pmSEA - LIS
1 stop19h 05mAmerican Airlines
Wed 11/276:35 amLIS - SEA
2 stops22h 40mAmerican Airlines
Deal found 5/16$660
Wed 12/1112:50 pmSEA - LIS
1 stop13h 40mMultiple Airlines
Wed 12/2511:00 amLIS - SEA
2 stops18h 56mMultiple Airlines
Deal found 5/15$662
Wed 11/201:50 pmSEA - LIS
2 stops19h 55mAmerican Airlines
Wed 11/276:35 amLIS - SEA
2 stops22h 40mAmerican Airlines
Deal found 5/16$663
Tue 11/56:39 amSEA - LIS
3 stops19h 51mUnited Airlines
Tue 11/266:10 amLIS - SEA
1 stop18h 55mUnited Airlines
Deal found 5/16$664

Seattle to Portugal flights leaving soon

Find last-minute flight options from Seattle to Portugal for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Consider one of these great deals we found on last-minute flights from Seattle to Portugal. To prevent any unwanted surprises, users should verify their flight info before booking.
Sun 5/267:40 amSEA - LIS
1 stop17h 40mAir Canada
Thu 6/611:25 amLIS - SEA
1 stop17h 51mAir Canada
Deal found 5/15$1,089
Sun 5/261:10 pmSEA - LIS
2 stops38h 00mLufthansa
Thu 6/611:25 amLIS - SEA
2 stops57h 02mLufthansa
Deal found 5/15$1,095
Wed 5/225:50 amSEA - LIS
3 stops28h 00mMultiple Airlines
Tue 5/2810:00 pmLIS - SEA
3 stops30h 35mMultiple Airlines
Deal found 5/15$1,130
Tue 5/211:30 pmSEA - LIS
1 stop17h 05mKLM
Tue 5/283:35 pmLIS - SEA
1 stop26h 35mKLM
Deal found 5/15$1,132
Sat 5/255:50 amSEA - LIS
3 stops25h 50mMultiple Airlines
Mon 6/38:05 amLIS - SEA
3 stops44h 24mMultiple Airlines
Deal found 5/15$1,139
Thu 5/235:50 amSEA - LIS
3 stops28h 40mMultiple Airlines
Sat 5/257:00 amLIS - SEA
2 stops21h 35mMultiple Airlines
Deal found 5/15$1,140
Sat 5/257:00 amSEA - LIS
2 stops26h 45mMultiple Airlines
Mon 6/38:55 amLIS - SEA
3 stops31h 50mMultiple Airlines
Deal found 5/15$1,155
Sat 5/257:40 pmSEA - LIS
1 stop19h 35mBritish Airways
Mon 6/36:45 pmLIS - SEA
1 stop24h 50mBritish Airways
Deal found 5/15$1,156
Tue 5/215:05 pmSEA - LIS
1 stop21h 00mMultiple Airlines
Tue 5/285:30 amLIS - SEA
1 stop17h 25mMultiple Airlines
Deal found 5/16$1,161

One-way flights to Portugal from Seattle

Search for one-way flight options from Seattle to Portugal. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Users traveling one-way from Seattle to Portugal can select one of these great deals. Users needing a return flight from Seattle to Portugal should utilize the search form above.
Mon 9/301:50 pmSEA - LIS
3 stops23h 25mMultiple Airlines
Deal found 5/15$324
Sun 10/131:50 pmSEA - LIS
3 stops23h 00mMultiple Airlines
Deal found 5/15$325
Mon 7/226:15 pmSEA - LIS
2 stops45h 40mMultiple Airlines
Deal found 5/16$330
Mon 9/303:50 pmSEA - LIS
2 stops20h 15mMultiple Airlines
Deal found 5/15$336
Mon 9/303:50 pmSEA - LIS
2 stops20h 15mMultiple Airlines
Deal found 5/16$339
Wed 7/176:15 pmSEA - LIS
2 stops54h 15mMultiple Airlines
Deal found 5/16$342
Tue 10/83:50 pmSEA - LIS
2 stops21h 25mMultiple Airlines
Deal found 5/15$344
Mon 9/233:50 pmSEA - LIS
2 stops20h 15mMultiple Airlines
Deal found 5/16$345
Sun 10/133:50 pmSEA - LIS
2 stops21h 25mMultiple Airlines
Deal found 5/15$346

Find flights from Seattle to Portugal within your budget

Customize your flight search to find flights from Seattle to Portugal 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 2,637,452 searches. Data last updated May 16, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$651 - $728

Route

Depart

Return

Price

Seattle/Tacoma IntlLisbon Humberto Delgado

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 9/3

2 stops18h 50m

Lisbon Humberto Delgado

Tue 9/10

2 stops22h 21m

$651

Seattle/Tacoma IntlLisbon Humberto Delgado

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 11/5

2 stops24h 20m

Lisbon Humberto Delgado

Wed 11/13

2 stops39h 13m

$654

Seattle/Tacoma IntlLisbon Humberto Delgado

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 11/5

1 stop15h 35m

Lisbon Humberto Delgado

Tue 11/26

2 stops42h 08m

$657

Seattle/Tacoma IntlLisbon Humberto Delgado

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 11/5

1 stop19h 00m

Lisbon Humberto Delgado

Wed 11/13

2 stops22h 15m

$658

Seattle/Tacoma IntlLisbon Humberto Delgado

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 11/3

1 stop17h 40m

Lisbon Humberto Delgado

Fri 11/15

1 stop20h 20m

$666

Seattle/Tacoma IntlLisbon Humberto Delgado

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sat 11/2

1 stop33h 30m

Lisbon Humberto Delgado

Fri 11/15

1 stop18h 41m

$674

Seattle/Tacoma IntlLisbon Humberto Delgado

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 11/3

1 stop15h 00m

Lisbon Humberto Delgado

Sun 11/17

1 stop17h 40m

$718

Seattle/Tacoma IntlLisbon Humberto Delgado

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 10/14

1 stop18h 50m

Lisbon Humberto Delgado

Wed 10/23

1 stop26h 46m

$721

Seattle/Tacoma IntlPorto

SEA - OPO

SEAOPO

Seattle/Tacoma Intl

Sat 11/2

2 stops38h 28m

Porto

Tue 11/12

1 stop27h 25m

$728

Flights are sorted by cheapest first

Deals found on 5/15

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. 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 Portugal. Reviews last updated May 16, 2024.
Read through reviews of airlines operating flights from Seattle to Portugal, such as United Airlines, American Airlines and KLM. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
10,673 reviews
Check prices

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.6

Entertainment

8.0

Food

7.4

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Delta
8.0
Very good
10,673 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.6

Entertainment

8.0

Food

7.4

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

KLM
7.9
Good
1,568 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.6

Entertainment

8.0

Food

7.4

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

SWISS
7.8
Good
1,994 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.6

Entertainment

8.0

Food

7.4

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Virgin Atlantic
7.7
Good
735 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.6

Entertainment

8.0

Food

7.4

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Air France
7.6
Good
1,764 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.6

Entertainment

8.0

Food

7.4

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Portugal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to Portugal?

    Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Portugal. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

  • Can I find flights from Seattle to Portugal for under $700 on Cheapflights?

    Yes, there are multiple flights from Seattle to Portugal for under $700. The cheapest flight booked recently is on Multiple Airlines for just $651, but on average you can expect to pay $678.

  • Are there last-minute flights available from Seattle to Portugal for under $1,100?

    There are currently 20+ open flights from Seattle to Portugal within the next 7 days for less than $1,100.

  • What are the most popular routes from Seattle to Portugal?

    When deciding which route to take from Seattle to Portugal consider Seattle/Tacoma Intl - Lisbon Humberto Delgado, Seattle/Tacoma Intl - Porto or Seattle/Tacoma Intl - Ponta Delgada Nordela as they are the most popular.

  • What are the most popular airlines that fly from Seattle to Portugal?

    American Airlines, Air Canada and Air France are the most popular airlines when flying from Seattle to Portugal.

  • What does SEA to LIS mean?

    SEA stands for Seattle/Tacoma Intl Airport, while LIS stands for Lisbon Humberto Delgado Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry. Porto Airport (OPO), Faro Airport (FAO), Funchal Madeira Airport (FNC), Ponta Delgada Nordela Airport (PDL), Lajes Airport (TER) are some additional IATA codes for airports related to your trip.

  • Can I find deals for flights from Seattle to Portugal that include extra baggage allowance?

    The amount of baggage you can bring on your Seattle to Portugal flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Seattle to Portugal with specific airlines?

    Yes, Cheapflights allows you to browse and filter Seattle to Portugal flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Seattle to Portugal that include hotel bookings?

    Yes. In addition to deals on Seattle to Portugal flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Portugal?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Portugal.

  • Can I find deals for business class flights from Seattle to Portugal?

    Yes. Cheapflights offers flight deals from Seattle to Portugal by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Seattle to Portugal that allow pets onboard?

    Many airlines flying from Seattle to Portugal offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Seattle to Portugal?

    Yes, you can often find last-minute deals on Seattle to Portugal flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Seattle to Portugal flight deals updated?

    The Seattle to Portugal flight deals you see on this page were last updated on 5/16.

See more FAQs

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Top 10 airlines flying from Seattle to Portugal

Discover the top 10 airlines that operate flights from Seattle to Portugal. 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 2,637,452 searches. Data last updated May 16, 2024.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$456Average$955FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
LufthansaCheapest$543Average$1,067FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
American AirlinesCheapest$544Average$840FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
KLMCheapest$549Average$988FlexibilityNo cancel feeOn-time75%
Search KLM flights
British AirwaysCheapest$581Average$1,076FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest$600Average$1,204FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapest$616Average$1,008FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
FinnairCheapest$645Average$1,058FlexibilityNo cancel feeOn-time76%
Search Finnair flights
DeltaCheapest$646Average$1,070FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air FranceCheapest$654Average$1,325FlexibilityNo cancel feeOn-time77%
Search Air France flights
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Search flights from Seattle to Portugal by cabin class

Find flights from Seattle to Portugal, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Can Cheapflights find flights from Seattle to Portugal with no change fees?

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Can Cheapflights notify me if prices for flights from Seattle to Portugal become cheaper?

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