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Cheap flights from Porto to Washington, D.C. from $378

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 5/10. 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.
Delta Logo
5:00 am - 7:16 pm
OPO
-
BWI
19h 16m
2 stops
Delta Logo
3:53 pm - 3:25 pm
BWI
-
OPO
18h 32m
2 stops
$679Delta
Thu, May 14 - Wed, May 27
Delta Logo
5:00 am - 10:59 pm
OPO
-
BWI
22h 59m
2 stops
Delta Logo
3:33 pm - 3:25 pm
BWI
-
OPO
18h 52m
2 stops
$687Delta
Thu, Apr 23 - Wed, May 6
British Airways Logo
9:25 pm - 7:40 pm
OPO
-
BWI
27h 15m
1 stop
British Airways Logo
9:35 pm - 8:35 pm
BWI
-
OPO
18h 00m
1 stop
$729British Airways
Mon, Apr 13 - Sun, Apr 26
British Airways Logo
9:25 pm - 7:40 pm
OPO
-
BWI
27h 15m
1 stop
British Airways Logo
9:35 pm - 8:35 pm
BWI
-
OPO
18h 00m
1 stop
$730British Airways
Mon, Apr 13 - Sun, Apr 26
British Airways Logo
9:25 pm - 7:40 pm
OPO
-
BWI
27h 15m
1 stop
British Airways Logo
9:35 pm - 8:35 pm
BWI
-
OPO
18h 00m
1 stop
$747British Airways
Mon, Apr 13 - Sun, Apr 26
British Airways Logo
9:55 am - 7:40 pm
OPO
-
BWI
14h 45m
1 stop
British Airways Logo
9:30 pm - 6:55 pm
BWI
-
OPO
16h 25m
1 stop
$751British Airways
Thu, Apr 23 - Wed, May 6
British Airways Logo
9:55 am - 11:56 pm
OPO
-
BWI
19h 01m
2 stops
British Airways Logo
9:30 pm - 6:55 pm
BWI
-
OPO
16h 25m
1 stop
$765British Airways
Thu, Apr 23 - Wed, May 6
United Airlines Logo
6:00 am - 9:23 pm
OPO
-
BWI
20h 23m
3 stops
United Airlines Logo
11:08 am - 11:20 am
BWI
-
OPO
19h 12m
2 stops
$771United Airlines
Wed, Apr 22 - Wed, Apr 29
British Airways Logo
9:25 pm - 7:40 pm
OPO
-
BWI
27h 15m
1 stop
British Airways Logo
9:35 pm - 8:35 pm
BWI
-
OPO
18h 00m
1 stop
$793British Airways
Mon, Apr 13 - Sun, Apr 26
Delta Logo
5:00 am - 5:41 pm
OPO
-
BWI
17h 41m
2 stops
Delta Logo
1:45 pm - 10:40 am
BWI
-
OPO
15h 55m
2 stops
$800Delta
Wed, Jul 1 - Wed, Jul 8

British Airways flights from Porto to Baltimore

Our best British Airways deals on Porto to Baltimore flight tickets
British Airways
Apr 13
OPO9:25 pmPorto
27h 15m
1 stop
BWI7:40 pmBaltimore/Washington
Apr 26
BWI9:35 pmBaltimore/Washington
18h 00m
1 stop
OPO8:35 pmPorto
$729
British Airways
Apr 13
OPO9:25 pmPorto
27h 15m
1 stop
BWI7:40 pmBaltimore/Washington
Apr 26
BWI9:35 pmBaltimore/Washington
18h 00m
1 stop
OPO8:35 pmPorto
$730
British Airways
Apr 13
OPO9:25 pmPorto
27h 15m
1 stop
BWI7:40 pmBaltimore/Washington
Apr 26
BWI9:35 pmBaltimore/Washington
18h 00m
1 stop
OPO8:35 pmPorto
$747

United Airlines flights from Porto to Baltimore

Our best United Airlines deals on Porto to Baltimore flight tickets
United Airlines
Jul 2
OPO11:50 amPorto
17h 58m
2 stops
BWI12:48 amBaltimore/Washington
Jul 9
BWI8:25 amBaltimore/Washington
17h 30m
2 stops
OPO6:55 amPorto
$815
United Airlines
Jun 1
OPO12:10 pmPorto
17h 23m
2 stops
BWI12:33 amBaltimore/Washington
Jun 6
BWI6:50 amBaltimore/Washington
19h 05m
2 stops
OPO6:55 amPorto
$854
United Airlines
May 11
OPO6:00 amPorto
20h 02m
2 stops
BWI9:02 pmBaltimore/Washington
May 18
BWI11:00 amBaltimore/Washington
17h 45m
2 stops
OPO9:45 amPorto
$1,099

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 March 28, 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

Cheapest round-trip

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 5/14

5:00 am-7:16 pm

2 stops19h 16m

Baltimore/Washington

Wed 5/27

3:53 pm-3:25 pm

2 stops18h 32m

$679

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 4/23

5:00 am-10:59 pm

2 stops22h 59m

Baltimore/Washington

Wed 5/6

3:33 pm-3:25 pm

2 stops18h 52m

$687

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Mon 4/13

9:25 pm-7:40 pm

1 stop27h 15m

Baltimore/Washington

Sun 4/26

9:35 pm-8:35 pm

1 stop18h 00m

$729

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Mon 4/13

9:25 pm-7:40 pm

1 stop27h 15m

Baltimore/Washington

Sun 4/26

9:35 pm-8:35 pm

1 stop18h 00m

$730

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Mon 4/13

9:25 pm-7:40 pm

1 stop27h 15m

Baltimore/Washington

Sun 4/26

9:35 pm-8:35 pm

1 stop18h 00m

$747
Quickest round-trip

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 4/23

9:55 am-7:40 pm

1 stop14h 45m

Baltimore/Washington

Wed 5/6

9:30 pm-6:55 pm

1 stop16h 25m

$751

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 4/23

9:55 am-11:56 pm

2 stops19h 01m

Baltimore/Washington

Wed 5/6

9:30 pm-6:55 pm

1 stop16h 25m

$765

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Wed 4/22

6:00 am-9:23 pm

3 stops20h 23m

Baltimore/Washington

Wed 4/29

11:08 am-11:20 am

2 stops19h 12m

$771

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Mon 4/13

9:25 pm-7:40 pm

1 stop27h 15m

Baltimore/Washington

Sun 4/26

9:35 pm-8:35 pm

1 stop18h 00m

$793

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Wed 7/1

5:00 am-5:41 pm

2 stops17h 41m

Baltimore/Washington

Wed 7/8

1:45 pm-10:40 am

2 stops15h 55m

$800

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 25% 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 59m

Direct flights

None
The fastest flight from Porto to Baltimore takes 15h 59m
There are no direct flights from Porto to Baltimore. There are no popular flight routes from Porto to Baltimore.
Search flight deals

  • 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 59m.

  • 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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