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Cheap flights from Porto to Washington, D.C. from $362

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 12/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Porto to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
8:20 am - 10:07 am
OPO
-
BWI
30h 47m
2 stops
American Airlines Logo
7:25 pm - 7:40 am
BWI
-
OPO
31h 15m
2 stops
$622American Airlines
Mon, Sep 21 - Tue, Sep 29
American Airlines Logo
8:20 am - 1:05 pm
OPO
-
BWI
33h 45m
2 stops
American Airlines Logo
6:16 pm - 4:00 pm
BWI
-
OPO
40h 44m
2 stops
$624American Airlines
Mon, Sep 21 - Wed, Sep 30
American Airlines Logo
8:20 am - 4:46 pm
OPO
-
BWI
37h 26m
2 stops
American Airlines Logo
5:47 pm - 11:45 am
BWI
-
OPO
36h 58m
2 stops
$625American Airlines
Thu, Dec 3 - Sat, Dec 5
Delta Logo
5:00 am - 5:27 pm
OPO
-
BWI
17h 27m
2 stops
Delta Logo
1:55 pm - 3:25 pm
BWI
-
OPO
20h 30m
2 stops
$627Delta
Tue, Sep 22 - Mon, Sep 28
American Airlines Logo
12:25 pm - 6:30 pm
OPO
-
BWI
35h 05m
2 stops
American Airlines Logo
7:25 pm - 7:40 am
BWI
-
OPO
31h 15m
2 stops
$629American Airlines
Thu, Sep 24 - Tue, Sep 29
American Airlines Logo
12:25 pm - 6:30 pm
OPO
-
BWI
35h 05m
2 stops
American Airlines Logo
2:08 pm - 4:00 pm
BWI
-
OPO
20h 52m
2 stops
$631American Airlines
Thu, Sep 24 - Thu, Oct 1
Iberia Logo
10:00 pm - 5:15 pm
OPO
-
BWI
24h 15m
2 stops
Iberia Logo
9:30 pm - 8:00 pm
BWI
-
OPO
17h 30m
2 stops
$632Iberia
Tue, Sep 22 - Mon, Sep 28
American Airlines Logo
12:25 pm - 1:05 pm
OPO
-
BWI
53h 40m
2 stops
American Airlines Logo
7:25 pm - 7:40 am
BWI
-
OPO
31h 15m
2 stops
$633American Airlines
Tue, Sep 22 - Tue, Sep 29
American Airlines Logo
12:25 pm - 1:05 pm
OPO
-
BWI
53h 40m
2 stops
American Airlines Logo
6:00 am - 11:45 am
BWI
-
OPO
24h 45m
2 stops
$635American Airlines
Tue, Sep 22 - Sun, Sep 27
American Airlines Logo
12:25 pm - 6:30 pm
OPO
-
BWI
35h 05m
2 stops
American Airlines Logo
7:09 pm - 7:40 am
BWI
-
OPO
55h 31m
2 stops
$637American Airlines
Thu, Sep 24 - Sat, Sep 26

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Delta flights from Porto to Baltimore

Our best Delta deals on Porto to Baltimore flight tickets
Delta
Sep 22
OPO5:00 amPorto
17h 27m
2 stops
BWI5:27 pmBaltimore/Washington
Sep 28
BWI1:55 pmBaltimore/Washington
20h 30m
2 stops
OPO3:25 pmPorto
$627
Delta
Aug 28
OPO5:00 amPorto
17h 47m
2 stops
BWI5:47 pmBaltimore/Washington
Dec 9
BWI1:00 pmBaltimore/Washington
16h 35m
2 stops
OPO10:35 amPorto
$699
Delta
Jul 9
OPO5:55 amPorto
16h 47m
2 stops
BWI5:42 pmBaltimore/Washington
Jul 13
BWI6:22 pmBaltimore/Washington
16h 03m
2 stops
OPO3:25 pmPorto
$717

British Airways flights from Porto to Baltimore

Our best British Airways deals on Porto to Baltimore flight tickets
British Airways
Aug 6
OPO9:55 amPorto
14h 45m
1 stop
BWI7:40 pmBaltimore/Washington
Aug 18
BWI7:25 pmBaltimore/Washington
19h 05m
1 stop
OPO7:30 pmPorto
$846
British Airways
Aug 28
OPO9:25 pmPorto
24h 50m
1 stop
BWI5:15 pmBaltimore/Washington
Dec 9
BWI8:35 pmBaltimore/Washington
16h 15m
1 stop
OPO5:50 pmPorto
$879
British Airways
Aug 28
OPO9:25 pmPorto
24h 50m
1 stop
BWI5:15 pmBaltimore/Washington
Dec 9
BWI8:18 pmBaltimore/Washington
16h 32m
2 stops
OPO5:50 pmPorto
$888

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 June 25, 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

Mon 9/21

8:20 am-10:07 am

2 stops30h 47m

Baltimore/Washington

Tue 9/29

7:25 pm-7:40 am

2 stops31h 15m

$622

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Mon 9/21

8:20 am-1:05 pm

2 stops33h 45m

Baltimore/Washington

Wed 9/30

6:16 pm-4:00 pm

2 stops40h 44m

$624

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 12/3

8:20 am-4:46 pm

2 stops37h 26m

Baltimore/Washington

Sat 12/5

5:47 pm-11:45 am

2 stops36h 58m

$625
Quickest round-trip

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Tue 9/22

5:00 am-5:27 pm

2 stops17h 27m

Baltimore/Washington

Mon 9/28

1:55 pm-3:25 pm

2 stops20h 30m

$627

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 9/24

12:25 pm-6:30 pm

2 stops35h 05m

Baltimore/Washington

Tue 9/29

7:25 pm-7:40 am

2 stops31h 15m

$629

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 9/24

12:25 pm-6:30 pm

2 stops35h 05m

Baltimore/Washington

Thu 10/1

2:08 pm-4:00 pm

2 stops20h 52m

$631

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Tue 9/22

10:00 pm-5:15 pm

2 stops24h 15m

Baltimore/Washington

Mon 9/28

9:30 pm-8:00 pm

2 stops17h 30m

$632

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Tue 9/22

12:25 pm-1:05 pm

2 stops53h 40m

Baltimore/Washington

Tue 9/29

7:25 pm-7:40 am

2 stops31h 15m

$633

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Tue 9/22

12:25 pm-1:05 pm

2 stops53h 40m

Baltimore/Washington

Sun 9/27

6:00 am-11:45 am

2 stops24h 45m

$635

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 9/24

12:25 pm-6:30 pm

2 stops35h 05m

Baltimore/Washington

Sat 9/26

7:09 pm-7:40 am

2 stops55h 31m

$637

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 9% 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

16h 26m

Direct flights

None
The fastest flight from Porto to Baltimore takes 16h 26m
There are no direct flights from Porto to Baltimore. There are no popular flight routes from Porto to Baltimore.
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Frequently asked questions about flying from Porto to Baltimore

  • 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 16h 26m.

  • 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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