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$255+ Cheap flights from the United States to Portugal

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 7/18. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — LIS
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from USA to Portugal

Keep the following information in mind while searching for USA to Portugal flight deals. Data was last updated June 12, 2025.

Round-trip from

$496
(Kiwi.com)

One-way from

$255
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$1,052

Good round-trip deal

$565 or less

Good one-way deal

$288 or less
From USA to Portugal
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One-way flight from USA to Portugal
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Highest demand for flights based on searches. 16% potential increase in price ($151 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from USA to Portugal.
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Price to beat on a one-way flight from USA to Portugal.
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Find flight deals from USA to Portugal

Cheapest flights from USA to Portugal
Explore the most affordable flight options available from USA to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 6/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1511:00 pmBOS - LIS
1 stop13h 05mVueling
Thu 10/22:00 pmLIS - BOS
1 stop12h 15mVueling
Deal found 6/12$495
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/176:10 pmBOS - LIS
Nonstop6h 30mMultiple Airlines
Thu 9/189:10 amLIS - BOS
1 stop17h 05mMultiple Airlines
Deal found 6/10$496
This oojo deal was found by Cheapflights users on 6/11. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/16:10 pmBOS - LIS
Nonstop6h 30mTAP AIR PORTUGAL
Fri 10/1010:00 pmLIS - BOS
1 stop27h 20mTAP AIR PORTUGAL
Deal found 6/11$497
This Iberia deal was found by Cheapflights users on 6/12. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/511:55 pmBOS - LIS
1 stop15h 45mIberia
Wed 10/159:10 amLIS - BOS
1 stop17h 05mIberia
Deal found 6/12$499
This Iberia deal was found by Cheapflights users on 6/9. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/46:00 pmIAD - LIS
1 stop19h 05mIberia
Thu 11/68:20 amLIS - IAD
1 stop13h 10mIberia
Deal found 6/9$502
This American Airlines deal was found by Cheapflights users on 6/9. 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.
Sun 11/26:15 pmIAD - LIS
1 stop18h 30mAmerican Airlines
Wed 11/198:45 pmLIS - IAD
1 stop24h 45mAmerican Airlines
Deal found 6/9$503
This Scandinavian Airlines deal was found by Cheapflights users on 6/11. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/305:35 pmBOS - LIS
1 stop17h 30mScandinavian Airlines
Mon 2/94:55 pmLIS - BOS
2 stops34h 39mScandinavian Airlines
Deal found 6/11$507
This Trip.com deal was found by Cheapflights users on 6/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/15:45 pmIAD - LIS
Nonstop7h 20mTAP AIR PORTUGAL
Mon 9/85:30 pmLIS - IAD
Nonstop8h 20mTAP AIR PORTUGAL
Deal found 6/9$509
This Ovago deal was found by Cheapflights users on 6/9. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/26:15 pmIAD - LIS
1 stop18h 30mBritish Airways
Wed 11/58:45 pmLIS - IAD
1 stop24h 45mBritish Airways
Deal found 6/9$521
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/249:45 amIAD - LIS
2 stops31h 05mMultiple Airlines
Mon 9/2910:10 pmLIS - IAD
2 stops27h 55mMultiple Airlines
Deal found 6/10$537
This Virgin Atlantic deal was found by Cheapflights users on 6/11. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/249:40 amEWR - LIS
2 stops18h 20mVirgin Atlantic
Tue 12/211:15 amLIS - EWR
2 stops16h 48mVirgin Atlantic
Deal found 6/11$548
This Cheapflightsfares deal was found by Cheapflights users on 6/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1610:45 pmEWR - LIS
1 stop19h 40mTAP AIR PORTUGAL
Sat 11/16:45 pmLIS - EWR
Nonstop8h 25mTAP AIR PORTUGAL
Deal found 6/12$549

Cheapflights Fare Finder

Customize your flight search to find flights from USA 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 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from the United States to Portugal that are best for you.

Fly from

USA

Fly to

Portugal

Route

Depart

Return

Price

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Mon 9/15

11:00 pm-5:05 pm

1 stop13h 05m

Lisbon Humberto Delgado

Thu 10/2

2:00 pm-9:15 pm

1 stop12h 15m

$495

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sun 8/17

6:10 pm-5:40 am

Nonstop6h 30m

Lisbon Humberto Delgado

Thu 9/18

9:10 am-9:15 pm

1 stop17h 05m

$496

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Wed 10/1

6:10 pm-5:40 am

Nonstop6h 30m

Lisbon Humberto Delgado

Fri 10/10

10:00 pm-8:20 pm

1 stop27h 20m

$497

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sun 10/5

11:55 pm-8:40 pm

1 stop15h 45m

Lisbon Humberto Delgado

Wed 10/15

9:10 am-9:15 pm

1 stop17h 05m

$499

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sun 11/30

5:35 pm-4:05 pm

1 stop17h 30m

Lisbon Humberto Delgado

Mon 2/9

4:55 pm-10:34 pm

2 stops34h 39m

$507

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Mon 9/1

5:45 pm-6:05 am

Nonstop7h 20m

Lisbon Humberto Delgado

Mon 9/8

5:30 pm-8:50 pm

Nonstop8h 20m

$509

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Wed 9/10

9:45 am-6:40 pm

3 stops27h 55m

Lisbon Humberto Delgado

Thu 9/18

7:05 pm-3:50 pm

2 stops25h 45m

$538

NewarkLisbon

EWR - LIS

EWRLIS

Newark

Mon 9/1

10:50 pm-10:50 am

Nonstop7h 00m

Lisbon Humberto Delgado

Tue 9/30

12:15 pm-3:20 pm

Nonstop8h 05m

$550

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Sat 8/16

11:15 pm-9:20 pm

1 stop17h 05m

Lisbon Humberto Delgado

Sun 8/24

10:20 pm-10:10 pm

1 stop28h 50m

$551

NewarkLisbon

EWR - LIS

EWRLIS

Newark

Tue 7/22

10:25 am-9:20 am

1 stop17h 55m

Lisbon Humberto Delgado

Thu 8/28

11:25 am-12:08 pm

2 stops29h 43m

$556

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 60 results
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Best time to book a flight from USA to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from USA with our price prediction graph.
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 the United States to Portugal

What is the cheapest month to book a flight from USA to Portugal?

Currently, January is the cheapest month in which you can book a flight from USA to Portugal (average of $612). Flying from USA to Portugal in June is currently the most expensive (average of $1,136). 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.

What is the cheapest time of day to fly from US to PT?

Find hourly flight availability from USA to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

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

Rainfall in Portugal by month

Plan your trip to Portugal by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portugal ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Portugal when rainfall is around 0.2 in.

Temperature in Portugal by month

Plan your trip to Portugal by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portugal, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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 June 12, 2025.
Read through reviews of airlines operating flights from USA to Portugal, such as Delta, KLM and Air Transat. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Transat
7.8
Good
396 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Azores Airlines
7.6
Good
66 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Austrian Airlines
7.6
Good
802 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

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

  • How popular is this USA to Portugal flight route?

    The United States to Portugal flight path was viewed by 35 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines to fly from USA to Portugal one-way?

    $255 is the cheapest one-way deal found within the past few days, from TAP AIR PORTUGAL. You may also be able to find cheap deals on Icelandair and Iberia, with prices starting from $256 and $267, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from USA 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.

  • What is the cheapest month to book a flight from USA to Portugal?

    Currently, January is the cheapest month in which you can book a flight from USA to Portugal (average of $612). Flying from USA to Portugal in June is currently the most expensive (average of $1,136). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for USA to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Heathrow flights
John F Kennedy Intl to Charles de Gaulle flights
Newark to Charles de Gaulle flights
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Newark to Orly flights
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John F Kennedy Intl to Athens flights
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Boston to Heathrow flights
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Dallas/Fort Worth to Heathrow flights
John F Kennedy Intl to Malpensa flights
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Baltimore to Heathrow flights
O'Hare Intl to Charles de Gaulle flights
O'Hare Intl to Leonardo da Vinci/Fiumicino flights
Newark to Malpensa flights
LaGuardia to Leonardo da Vinci/Fiumicino flights
Boston to Charles de Gaulle flights
Boston to Leonardo da Vinci/Fiumicino flights
John F Kennedy Intl to Dublin flights
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Dulles Intl to Leonardo da Vinci/Fiumicino flights
Boston to Lisbon flights
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Top 10 airlines flying from USA to Portugal

Discover the top 10 airlines that operate flights from USA 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 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
LEVELCheapest$227Average$644FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$269Average$713FlexibilityNo cancel feeOn-time77%
Turkish AirlinesCheapest$322Average$730FlexibilityNo cancel feeOn-time77%
VuelingCheapest$328Average$726FlexibilityNo cancel feeOn-time88%
PLAYCheapest$331Average$381FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$339Average$619FlexibilityNo cancel feeOn-time76%
IberiaCheapest$357Average$820FlexibilityNo cancel feeOn-time77%
FinnairCheapest$370Average$773FlexibilityNo cancel feeOn-time76%
SWISSCheapest$377Average$834FlexibilityNo cancel feeOn-time79%
Air EuropaCheapest$455Average$688FlexibilityNo cancel feeOn-time83%

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