BWI - OPO

$320 Find Cheap Flights from Baltimore to Porto

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Baltimore to Porto departing on 5/14. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Porto

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Baltimore to Porto, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Baltimore to Porto, as well as popular online travel agencies
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41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$740
Multiple Airlines
Sat 5/2Sat 5/9
BWI - OPO • 2 stops
Cheapest one-way
$320
Multiple Airlines
Thu 5/14
BWI - OPO • 2 stops
Top airlines
Cheapest • from $799 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Baltimore and Porto. You'll need at least 1 connection.
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Booking Insights
Flight Deals

Cheap Flights from Baltimore to Porto (BWI-OPO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Baltimore to Porto that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Baltimore to Porto

Sat, May 2 - Sat, May 9
Multiple Airlines Logo
4:05 pm - 12:40 am
BWI
-
OPO
27h 35m
2 stops
Multiple Airlines Logo
9:00 am - 8:07 pm
OPO
-
BWI
16h 07m
2 stops
$740Multiple Airlines
Wed, Aug 19 - Fri, Aug 28
Multiple Airlines Logo
1:00 pm - 10:30 am
BWI
-
OPO
16h 30m
2 stops
Multiple Airlines Logo
5:55 am - 6:52 pm
OPO
-
BWI
17h 57m
2 stops
$765Multiple Airlines
Tue, Apr 14 - Tue, Apr 28
Multiple Airlines Logo
8:30 pm - 9:35 pm
BWI
-
OPO
20h 05m
2 stops
Multiple Airlines Logo
6:15 am - 10:20 pm
OPO
-
BWI
45h 05m
3 stops
$766Multiple Airlines
Wed, May 6 - Wed, May 13
KLM Logo
7:09 pm - 6:20 pm
BWI
-
OPO
18h 11m
2 stops
KLM Logo
5:55 am - 5:24 pm
OPO
-
BWI
16h 29m
2 stops
$769KLM
Thu, Apr 9 - Wed, Apr 15
Multiple Airlines Logo
11:20 pm - 8:25 pm
BWI
-
OPO
16h 05m
2 stops
Multiple Airlines Logo
7:10 am - 10:20 pm
OPO
-
BWI
44h 10m
3 stops
$781Multiple Airlines
Fri, Apr 17 - Fri, Apr 24
Multiple Airlines Logo
8:30 pm - 11:25 pm
BWI
-
OPO
21h 55m
2 stops
Multiple Airlines Logo
8:40 pm - 10:20 pm
OPO
-
BWI
30h 40m
3 stops
$785Multiple Airlines
Thu, Apr 9 - Wed, Apr 15
Multiple Airlines Logo
11:20 pm - 8:25 pm
BWI
-
OPO
16h 05m
2 stops
Multiple Airlines Logo
12:35 pm - 8:07 am
OPO
-
BWI
24h 32m
2 stops
$794Multiple Airlines
Sun, Apr 19 - Tue, Apr 28
British Airways Logo
9:35 pm - 8:35 pm
BWI
-
OPO
18h 00m
1 stop
British Airways Logo
8:55 pm - 7:40 pm
OPO
-
BWI
27h 45m
1 stop
$799British Airways
Tue, Apr 21 - Tue, Apr 28
Delta Logo
5:37 pm - 3:25 pm
BWI
-
OPO
16h 48m
2 stops
Delta Logo
11:30 am - 12:38 am
OPO
-
BWI
18h 08m
2 stops
$807Delta
Tue, Apr 21 - Tue, Apr 28
Delta Logo
7:22 pm - 3:30 pm
BWI
-
OPO
15h 08m
2 stops
Delta Logo
5:00 am - 4:49 pm
OPO
-
BWI
16h 49m
2 stops
$811Delta
Booking Insights

KAYAK's insights & trends for Baltimore to Porto flights

Get data-powered insights and trends into flights from Baltimore to Porto to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Baltimore to Porto?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Baltimore to Porto were found on British Airways ($799) and Delta ($807).

Good to know

Cheapest flight$320
Flight from Baltimore to Porto

When to book flights from Baltimore to Porto

Are your dates flexible? Find out the best times to travel from Baltimore to Porto based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Baltimore to Porto

  • What is the cheapest flight from Baltimore to Porto?

    In the last 3 days, the lowest price for a flight from Baltimore to Porto was $320 for a one-way ticket and $740 for a round-trip.

  • Do I need a passport to fly between Baltimore and Porto?

    A passport is required to fly from Baltimore to Porto.

  • Which airports will I be using when flying from Baltimore to Porto?

    When flying out of Baltimore you will be using Baltimore/Washington. You will be landing at Porto, also known as Porto.

  • Which aircraft models fly most regularly from Baltimore to Porto?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Baltimore to Porto?

    SkyTeam is the only airline alliance operating flights between Baltimore and Porto.

  • How does KAYAK find such low prices on flights from Baltimore to Porto?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Baltimore to Porto.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Baltimore to Porto?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Baltimore is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Baltimore to Porto?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to Baltimore with another airline. Booking your flights between Baltimore and OPO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Baltimore to Porto?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from Baltimore up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Baltimore to Porto

 
See real verified KAYAK customer reviews for airlines flying from Baltimore to Porto. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Baltimore to Porto? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8314 reviews
8.1Boarding
7.9Comfort
7.8Entertainment
7.2Food
8.5Crew
Airline reviews

the crew cancel the morning service due to the weather. Then the flight got deverted to Nashville . we were on the ground for over two hours the only gave us water once... no food or any snacks.... the crew should have handled better and offered something to passengers.

2.0 MediocreAnonymous, Mar 2026
HNL - ATL
Read more Delta reviews

the crew cancel the morning service due to the weather. Then the flight got deverted to Nashville . we were on the ground for over two hours the only gave us water once... no food or any snacks.... the crew should have handled better and offered something to passengers.

My recent experience was excellent on Delta! I flew with Delta Comfort and I was really comfortable in my seat. I enjoyed the in-flight service. The flight attendants were so friendly and hospitable. I love the snack on the flight as well. This was my first time flying on Delta and I will definitely consider flying with them again.

My flight was cencaled due with the bad weather on Sunday the crew was poorly mistaken my luggage supposed depart with my flight instead I didn’t have my luggage for almost 3 days the website is poorly respond to my complain until I have someone to do it my connection smooth their not even respon or email me even the have my luggage

Delta needs to step its game up get a more reliable internet service. Internet service was non-existent for this flight.

Mechanical Delay of over an hour with multiple gate changes. Entertainment system down for rejuvenation.

This was a Latam operated flight. Seats seemed a bit narrow in business class. Older aircraft.

I had a flight cancel and had it rerouted. When the rerouted they put me at a window seat instead of an isle. It was hard sitting by the window because the couple with masks on were making out. I get motion sickness which is why I need to have the isle seat.

NEVER MADE THE FLIGHT BECAUSE DELTA SAID THEY CAN NOT

THEY FAILED ME AND I NEVER GOT ON THE FLIGHT BECAUSE IT WAS SO DELAYED! I ENDED UP HAVING TO PAY OUT OF POCKET FOR A HOTEL AND STAY IN NASHVILLE TO CATCH A FLIGHT FOR THE FOLLOWING DAY. DELTA IS POOR CUSTOMER SERVICE>

8 hours late and the plane smelled like urine, that smell in the morning when your child wet the bed in the night.

Everything you need to know for your flight from Baltimore to Porto

Information on your arrival and departure airports