Portugal

$271+ Cheap flights from Baltimore (BWI) 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 4/25. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — LIS
Mar 20 — Mar 271
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Baltimore to Portugal 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 Baltimore to Portugal

Cheapest flights from Baltimore to Portugal
Explore the most affordable flight options available from Baltimore to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 18, 2026.

This United Airlines deal was found by Cheapflights users on 2/17. 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.
Wed 12/91:10 pm
BWI
-
OPO
2 stops21h 05m
United Airlines
Wed 12/1612:30 pm
OPO
-
BWI
2 stops26h 49m
United Airlines
Deal found 2/17$543
This British Airways deal was found by Cheapflights users on 2/15. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/18:35 pm
BWI
-
OPO
1 stop15h 05m
British Airways
Mon 11/95:30 pm
OPO
-
BWI
1 stop30h 15m
British Airways
Deal found 2/15$572
This BusinessClass deal was found by Cheapflights users on 2/15. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/211:50 am
BWI
-
OPO
2 stops14h 50m
Multiple Airlines
Mon 11/98:40 pm
OPO
-
BWI
2 stops27h 05m
Multiple Airlines
Deal found 2/15$584
This United Airlines deal was found by Cheapflights users on 2/15. 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 11/38:15 am
BWI
-
OPO
2 stops20h 15m
United Airlines
Sat 11/712:35 pm
OPO
-
BWI
2 stops16h 55m
United Airlines
Deal found 2/15$586
This Delta deal was found by Cheapflights users on 2/15. 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 11/45:33 pm
BWI
-
OPO
2 stops16h 52m
Delta
Wed 11/115:00 am
OPO
-
BWI
2 stops22h 15m
Delta
Deal found 2/15$591
This American Airlines deal was found by Cheapflights users on 2/17. 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 4/1410:55 am
BWI
-
OPO
2 stops15h 45m
American Airlines
Tue 4/218:20 am
OPO
-
BWI
2 stops16h 02m
American Airlines
Deal found 2/17$597
This Mytrip deal was found by Cheapflights users on 2/16. 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 4/810:09 am
BWI
-
OPO
3 stops33h 31m
Multiple Airlines
Sun 4/1210:30 pm
OPO
-
BWI
3 stops30h 29m
Multiple Airlines
Deal found 2/16$601
This Delta deal was found by Cheapflights users on 2/15. 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 4/125:40 am
BWI
-
OPO
2 stops35h 20m
Delta
Tue 4/216:15 am
OPO
-
BWI
2 stops32h 45m
Delta
Deal found 2/15$603
This Delta deal was found by Cheapflights users on 2/15. 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 11/41:00 pm
BWI
-
OPO
2 stops21h 25m
Delta
Mon 11/911:25 am
OPO
-
BWI
2 stops41h 46m
Delta
Deal found 2/15$611
This FlightHub deal was found by Cheapflights users on 2/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/11:00 pm
BWI
-
LIS
2 stops21h 35m
Scandinavian Airlines
Wed 9/96:15 pm
LIS
-
BWI
2 stops33h 27m
Scandinavian Airlines
Deal found 2/17$615
This Delta deal was found by Cheapflights users on 2/17. 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 3/313:35 pm
BWI
-
OPO
2 stops18h 50m
Delta
Wed 4/155:00 am
OPO
-
BWI
2 stops18h 17m
Delta
Deal found 2/17$618
This FlightHub deal was found by Cheapflights users on 2/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/11:00 pm
BWI
-
LIS
2 stops21h 35m
Multiple Airlines
Tue 9/159:15 pm
LIS
-
BWI
2 stops29h 58m
Multiple Airlines
Deal found 2/14$620

Find flight deals from Baltimore to Portugal

Keep the following information in mind while searching for Baltimore to Portugal flight deals. Data was last updated February 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$597
(American Airlines)

One-way from

$271
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$690
Provider with most accurate pricing for Washington, D.C. (WAS)-Lisbon Humberto Delgado flight deals.
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Lisbon Humberto Delgado flights.
From Baltimore/Washington to Portugal
One-way flight from Baltimore/Washington to Portugal
Highest demand for flights based on searches. 14% potential increase in price ($158 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($30 potential savings vs. average RT price).
Average for round-trip flights in February 2026

Cheapflights Fare Finder

 
Customize your flight search to find flights from Baltimore 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 February 18, 2026.
Use the filters below to find and compare flights from Baltimore to Portugal that are best for you.

Fly from

Baltimore

Fly to

Portugal

Route

Depart

Return

Price

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Tue 3/31

3:35 pm-3:25 pm

2 stops18h 50m

Porto

Wed 4/15

5:00 am-7:16 pm

2 stops19h 16m

$618

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Tue 4/28

9:30 pm-9:05 am

1 stop30h 35m

Porto

Thu 5/7

9:55 am-7:40 pm

1 stop14h 45m

$632

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Tue 3/24

3:35 pm-10:30 am

2 stops14h 55m

Porto

Mon 3/30

5:00 am-7:19 pm

2 stops19h 19m

$640

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Mon 4/13

2:18 pm-10:00 pm

2 stops26h 42m

Porto

Mon 4/20

4:20 pm-10:00 am

2 stops46h 40m

$641

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Sun 4/12

6:59 pm-10:00 pm

2 stops46h 01m

Porto

Mon 4/20

4:20 pm-10:00 am

2 stops46h 40m

$647

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Tue 4/7

10:55 am-7:40 am

2 stops15h 45m

Porto

Wed 4/15

8:20 am-7:39 pm

2 stops16h 19m

$648

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Wed 4/1

10:54 am-10:40 am

2 stops18h 46m

Porto

Wed 4/15

5:00 am-7:16 pm

2 stops19h 16m

$651

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Wed 4/22

11:08 am-9:45 am

2 stops17h 37m

Porto

Mon 4/27

6:00 am-9:23 pm

3 stops20h 23m

$670

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Tue 4/28

9:30 pm-9:05 am

1 stop30h 35m

Porto

Sun 5/3

9:25 pm-7:40 pm

1 stop27h 15m

$682

BaltimoreFaro

BWI - FAO

BWIFAO

Baltimore/Washington

Mon 4/27

8:30 pm-12:50 pm

1 stop11h 20m

Faro

Fri 5/15

10:00 pm-7:25 pm

2 stops26h 25m

$710

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/18

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Baltimore to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Baltimore 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 Baltimore to Portugal

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

Currently, December is the cheapest month in which you can book a flight from Baltimore to Portugal (average of $340). Flying from Baltimore to Portugal in September is currently the most expensive (average of $529). 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.

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 February 18, 2026.
Get a feel of what it's like to fly with Delta, KLM, and TAP AIR PORTUGAL from Baltimore to Portugal by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.5

Overall

7.9

Food

7.2

Entertainment

7.8

Comfort

7.9

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Crew

8.5

Overall

7.9

Food

7.2

Entertainment

7.8

Comfort

7.9

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Crew

8.5

Overall

7.9

Food

7.2

Entertainment

7.8

Comfort

7.9

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Crew

8.5

Overall

7.9

Food

7.2

Entertainment

7.8

Comfort

7.9

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
PLAY
7.0
Good

Crew

8.5

Overall

7.9

Food

7.2

Entertainment

7.8

Comfort

7.9

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Crew

8.5

Overall

7.9

Food

7.2

Entertainment

7.8

Comfort

7.9

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Baltimore 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 Baltimore to Portugal?

    Baltimore/Washington (BWI), located 8.5 mi from the city center, is the airport you fly out of when you book flights from Baltimore to Portugal.

  • How long is the flight from Baltimore to Portugal?

    There are many flights that can get you from Baltimore to Portugal in 18h 50m. Fly via Delta, British Airways, or United Airlines to get the fastest option. There are 3493 mi between Baltimore and Portugal. This flight may include one or multiple stops.

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Baltimore 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 Baltimore to Portugal?

    Currently, December is the cheapest month in which you can book a flight from Baltimore to Portugal (average of $340). Flying from Baltimore to Portugal in September is currently the most expensive (average of $529). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Baltimore to Portugal

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Baltimore to Portugal

Discover the top 6 airlines that operate flights from Baltimore 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 February 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest$344Average$414FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$529Average$922FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$548Average$831FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$643Average$988FlexibilityNo cancel feeOn-time70%
TAP AIR PORTUGALCheapest$680Average$991FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$755Average$1,174FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.