BWI - OPO

$365 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 5/10. 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
$753
Multiple Airlines
Tue 4/14Wed 4/29
BWI - OPO • 2 stops
Cheapest one-way
$365
Multiple Airlines
Sun 5/10
BWI - OPO • 3 stops
Top airlines
Cheapest • from $807 (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

Tue, Apr 14 - Wed, Apr 29
Multiple Airlines Logo
8:30 pm - 6:10 pm
BWI
-
OPO
16h 40m
2 stops
Multiple Airlines Logo
7:10 am - 10:20 pm
OPO
-
BWI
44h 10m
3 stops
$753Multiple Airlines
Tue, Apr 14 - Wed, Apr 29
Multiple Airlines Logo
8:30 pm - 6:10 pm
BWI
-
OPO
16h 40m
2 stops
Multiple Airlines Logo
7:10 am - 10:20 pm
OPO
-
BWI
44h 10m
3 stops
$762Multiple Airlines
Sun, Apr 19 - Fri, Apr 24
Multiple Airlines Logo
8:30 pm - 11:59 pm
BWI
-
OPO
22h 29m
2 stops
Multiple Airlines Logo
6:35 am - 10:20 pm
OPO
-
BWI
44h 45m
3 stops
$779Multiple Airlines
Tue, Apr 21 - Tue, Apr 28
Multiple Airlines Logo
8:30 pm - 6:10 pm
BWI
-
OPO
16h 40m
2 stops
Multiple Airlines Logo
6:15 am - 10:20 pm
OPO
-
BWI
45h 05m
3 stops
$783Multiple Airlines
Thu, Apr 30 - Thu, May 7
Multiple Airlines Logo
8:30 pm - 9:55 pm
BWI
-
OPO
20h 25m
2 stops
Multiple Airlines Logo
7:00 am - 6:43 pm
OPO
-
BWI
40h 43m
3 stops
$806Multiple Airlines
Mon, Apr 27 - Tue, May 5
Delta Logo
5:37 pm - 3:25 pm
BWI
-
OPO
16h 48m
2 stops
Delta Logo
5:00 am - 7:16 pm
OPO
-
BWI
19h 16m
2 stops
$807Delta
Wed, Apr 29 - Fri, May 8
Delta Logo
3:33 pm - 3:30 pm
BWI
-
OPO
18h 57m
2 stops
Delta Logo
5:00 am - 10:49 pm
OPO
-
BWI
22h 49m
2 stops
$811Delta
Tue, Apr 21 - Tue, Apr 28
Multiple Airlines Logo
8:30 pm - 10:10 am
BWI
-
OPO
32h 40m
3 stops
Multiple Airlines Logo
6:15 am - 10:20 pm
OPO
-
BWI
45h 05m
3 stops
$815Multiple Airlines
Mon, May 11 - Fri, May 15
Multiple Airlines Logo
8:30 pm - 8:00 am
BWI
-
OPO
30h 30m
3 stops
Multiple Airlines Logo
6:35 am - 11:29 pm
OPO
-
BWI
45h 54m
3 stops
$821Multiple Airlines
Mon, May 11 - Fri, May 15
Multiple Airlines Logo
8:30 pm - 6:20 pm
BWI
-
OPO
16h 50m
2 stops
Multiple Airlines Logo
6:35 am - 11:29 pm
OPO
-
BWI
45h 54m
3 stops
$828Multiple Airlines
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 Delta ($807) and British Airways ($848).

Good to know

Cheapest flight$365
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 $365 for a one-way ticket and $753 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 8368 reviews
8.5Crew
7.2Food
8.1Boarding
7.9Comfort
7.8Entertainment
Airline reviews

my mom urmila patel needed a wheelchair which was not available on the curbside. she needed to walk almost 50 meters inside (at the risk of falling) and then had to wait in line to get a wheelchair (this is not ok). Once obtained she had to seat in it for 30-45 minutes for someone to take her in thru the checkin process (which was fairly smooth and easy). the lady who helped her with her checkin process was very courteous and helpful

10.0 ExcellentViraj, Apr 2026
JFK - SFO
Read more Delta reviews

my mom urmila patel needed a wheelchair which was not available on the curbside. she needed to walk almost 50 meters inside (at the risk of falling) and then had to wait in line to get a wheelchair (this is not ok). Once obtained she had to seat in it for 30-45 minutes for someone to take her in thru the checkin process (which was fairly smooth and easy). the lady who helped her with her checkin process was very courteous and helpful

On the return flight, flight attendant Britt went out of her way to inform passengers that several of us had tight connections.

Fast, lovely scenery, great info on the Delta flight screen about landmarks we were flying over. Great landing!

Staff at the check-in counter were friendly, happy and helpful. They tagged our bags and sent us to “bag drop off” but were not very clear about where that was. The airport was busy we headed off in what we thought was the right direction until a gentleman waved us down and actually came after us. He was the baggage handler for Delta and recognized our “deer in the headlights “ look-he brought us to the right area (which was marked as the Southwest Airlines Drop Off) and sent us on our way. Wonderful guy, low key and working with a big smile on his face. Loved it. Loved him.

During the flight, the only refreshments provided were crackers and soft drinks; no substantial food was offered despite the international route. Furthermore, our initial flight was delayed, causing us to miss the connecting flight in Atlanta. The airline did not hold the connection, and we were informed that the next available flight is not for another 24 hours. While I am aware of alternative options via JetBlue, they operate out of JFK, which is not a viable solution for us as a resident of New Jersey.

Arlene was a great flight attendant. I also liked how one of the other flight attendants gave us a heads up about snacks and asked everyone to remove their headphones when it was their turn to order. Good idea.

Long flight but comfortable and not freezing as I have experienced on Hawaiian flights to the islands. They gave us blankets just in case. Nice touch.

I haven’t flown economy in over 20 years but it was not bad. Room by my feet for my bag and seat was roomy enough. Surprised in a good way.

The flight was delayed 90 minutes The Gate was wrong The Restroom on Aircraft was not clean There was a half used water bottle in my seat

Delta is always a wonderful experience. A clean plane and the crew is really friendly.

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

Information on your arrival and departure airports