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Cheap flights from Porto to Washington, D.C. from $380

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Porto to Washington, D.C. departing on 4/27. 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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Find the cheapest flights from Porto to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:00 am - 9:17 pm
OPO
-
BWI
44h 17m
2 stops
United Airlines Logo
6:20 am - 9:30 am
BWI
-
OPO
23h 10m
2 stops
$601United Airlines
Mon, Mar 2 - Mon, Mar 9
American Airlines Logo
8:20 am - 11:11 am
OPO
-
BWI
31h 51m
2 stops
American Airlines Logo
9:35 pm - 7:40 am
BWI
-
OPO
29h 05m
2 stops
$634American Airlines
Thu, Apr 16 - Sun, Apr 19
American Airlines Logo
8:20 am - 11:56 pm
OPO
-
BWI
20h 36m
2 stops
American Airlines Logo
9:35 pm - 7:40 am
BWI
-
OPO
29h 05m
2 stops
$635American Airlines
Thu, Apr 16 - Sun, Apr 19
British Airways Logo
9:25 pm - 7:40 pm
OPO
-
BWI
27h 15m
1 stop
British Airways Logo
9:30 pm - 7:50 pm
BWI
-
OPO
17h 20m
1 stop
$658British Airways
Sun, Jun 21 - Mon, Aug 10
British Airways Logo
10:40 am - 7:40 pm
OPO
-
BWI
14h 00m
1 stop
British Airways Logo
9:30 pm - 8:35 pm
BWI
-
OPO
18h 05m
1 stop
$660British Airways
Sat, May 2 - Sat, May 9
United Airlines Logo
6:00 am - 10:04 am
OPO
-
BWI
33h 04m
2 stops
United Airlines Logo
11:00 am - 9:45 am
BWI
-
OPO
17h 45m
2 stops
$665United Airlines
Tue, May 5 - Tue, May 12
British Airways Logo
8:40 pm - 7:40 pm
OPO
-
BWI
28h 00m
1 stop
British Airways Logo
9:30 pm - 7:50 pm
BWI
-
OPO
17h 20m
1 stop
$676British Airways
Tue, Jun 23 - Mon, Aug 10
Delta Logo
5:00 am - 4:57 pm
OPO
-
BWI
16h 57m
2 stops
Delta Logo
2:10 pm - 10:30 am
BWI
-
OPO
15h 20m
2 stops
$692Delta
Wed, Jun 24 - Wed, Aug 12
British Airways Logo
10:40 am - 7:40 pm
OPO
-
BWI
14h 00m
1 stop
British Airways Logo
9:30 pm - 7:05 pm
BWI
-
OPO
16h 35m
1 stop
$702British Airways
Sat, May 2 - Wed, May 13
United Airlines Logo
6:00 am - 9:02 pm
OPO
-
BWI
20h 02m
3 stops
United Airlines Logo
6:15 am - 9:45 am
BWI
-
OPO
22h 30m
2 stops
$717United Airlines
Tue, May 5 - Tue, May 12

British Airways flights from Porto to Baltimore

Our best British Airways deals on Porto to Baltimore flight tickets
British Airways
Jun 21
OPO9:25 pmPorto
27h 15m
1 stop
BWI7:40 pmBaltimore/Washington
Aug 10
BWI9:30 pmBaltimore/Washington
17h 20m
1 stop
OPO7:50 pmPorto
$658
British Airways
May 2
OPO10:40 amPorto
14h 00m
1 stop
BWI7:40 pmBaltimore/Washington
May 9
BWI9:30 pmBaltimore/Washington
18h 05m
1 stop
OPO8:35 pmPorto
$660
British Airways
Jun 23
OPO8:40 pmPorto
28h 00m
1 stop
BWI7:40 pmBaltimore/Washington
Aug 10
BWI9:30 pmBaltimore/Washington
17h 20m
1 stop
OPO7:50 pmPorto
$676

Delta flights from Porto to Baltimore

Our best Delta deals on Porto to Baltimore flight tickets
Delta
Jun 24
OPO5:00 amPorto
16h 57m
2 stops
BWI4:57 pmBaltimore/Washington
Aug 12
BWI2:10 pmBaltimore/Washington
15h 20m
2 stops
OPO10:30 amPorto
$692
Delta
Jun 15
OPO11:25 amPorto
15h 48m
2 stops
BWI10:13 pmBaltimore/Washington
Jul 19
BWI1:00 pmBaltimore/Washington
16h 30m
2 stops
OPO10:30 amPorto
$788
Delta
Jun 15
OPO11:25 amPorto
15h 48m
2 stops
BWI10:13 pmBaltimore/Washington
Jul 19
BWI1:00 pmBaltimore/Washington
16h 30m
2 stops
OPO10:30 amPorto
$789

momondo Fare Finder

 
Customize your flight search to find flights from Porto to Baltimore 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, momondo users made 832,500 searches. Data last updated February 5, 2026.
Use the filters below to find and compare flights from Porto to Baltimore that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Mon 3/2

6:00 am-9:17 pm

2 stops44h 17m

Baltimore/Washington

Mon 3/9

6:20 am-9:30 am

2 stops23h 10m

$601

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 4/16

8:20 am-11:11 am

2 stops31h 51m

Baltimore/Washington

Sun 4/19

9:35 pm-7:40 am

2 stops29h 05m

$634

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 4/16

8:20 am-11:56 pm

2 stops20h 36m

Baltimore/Washington

Sun 4/19

9:35 pm-7:40 am

2 stops29h 05m

$635

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Sun 6/21

9:25 pm-7:40 pm

1 stop27h 15m

Baltimore/Washington

Mon 8/10

9:30 pm-7:50 pm

1 stop17h 20m

$658

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Sat 5/2

10:40 am-7:40 pm

1 stop14h 00m

Baltimore/Washington

Sat 5/9

9:30 pm-8:35 pm

1 stop18h 05m

$660

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Tue 5/5

6:00 am-10:04 am

2 stops33h 04m

Baltimore/Washington

Tue 5/12

11:00 am-9:45 am

2 stops17h 45m

$665

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Tue 6/23

8:40 pm-7:40 pm

1 stop28h 00m

Baltimore/Washington

Mon 8/10

9:30 pm-7:50 pm

1 stop17h 20m

$676

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Wed 6/24

5:00 am-4:57 pm

2 stops16h 57m

Baltimore/Washington

Wed 8/12

2:10 pm-10:30 am

2 stops15h 20m

$692

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Sat 5/2

10:40 am-7:40 pm

1 stop14h 00m

Baltimore/Washington

Wed 5/13

9:30 pm-7:05 pm

1 stop16h 35m

$702

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Tue 5/5

6:00 am-9:02 pm

3 stops20h 02m

Baltimore/Washington

Tue 5/12

6:15 am-9:45 am

2 stops22h 30m

$717

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Porto to Baltimore

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

Can stopping save me money on Porto to Baltimore flights?

You could potentially save up to 51% on your flight if you consider stops on a Porto to Baltimore flight.

When to book flights from Porto to Baltimore

Are you open to changing your travel dates? Check out the ideal times to fly from Porto to Baltimore according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Porto to Baltimore (OPO to BWI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Porto to Baltimore

Fastest flight time

15h 48m

Direct flights

None
The fastest flight from Porto to Baltimore takes 15h 48m
There are no direct flights from Porto to Baltimore. There are no popular flight routes from Porto to Baltimore.
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  • How far is Porto to Baltimore/Washington by plane?

    The straight-line distance from Porto to Baltimore/Washington is 3491.2 mi. By plane, this route typically takes 15h 48m.

  • When did momondo last update prices for flights from Porto Airport to Baltimore/Washington Airport?

    Prices for flights from Porto Airport to Baltimore/Washington Airport are updated daily.

  • How old do you have to be to fly from Porto Airport to Baltimore/Washington 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 Porto Airport to Baltimore/Washington Airport.

  • What documentation or ID do you need to fly to Baltimore/Washington Airport?

    The required travel and health documents for your Baltimore/Washington Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Baltimore/Washington Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Porto to Baltimore?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Baltimore from Porto.

Can I find flights from Porto to Baltimore with flexible booking policies on momondo?

momondo does allow users to show only those flights to Baltimore from Porto which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Porto to Baltimore?

momondo provides multiple filters to help you find the best flight to Baltimore from Porto. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Porto to Baltimore right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Baltimore, momondo offers a useful price alert feature which will track prices for flights to Baltimore from Porto and alert you when they change.

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