BWI - OPO

$304 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 8/18. 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

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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Useful Info
Flights Deals

Cheap Flight Deals 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.

Recent round-trip flight deals from Baltimore to Porto

KAYAK's recommended round-trip deals from the most popular airlines that fly from Baltimore to Porto.
Discover the best prices for you by selecting your travel dates on KAYAK.
PLAY Logo
6:50 pm - 8:20 pmBWI-OPO
20h 30m1 stop
PLAY Logo
9:05 pm - 5:40 pmOPO-BWI
25h 35m1 stop
$587PLAY
Find Deal
Wed, Oct 8 - Sun, Oct 12
United Airlines Logo
10:51 am - 9:35 amBWI-OPO
17h 44m2 stops
United Airlines Logo
12:10 pm - 9:55 amOPO-BWI
26h 45m2 stops
$723United Airlines
Find Deal
Mon, Sep 15 - Thu, Oct 2
Delta Logo
5:25 pm - 3:30 pmBWI-OPO
17h 05m2 stops
Delta Logo
11:35 am - 9:43 pmOPO-BWI
15h 08m2 stops
$729Delta
Find Deal
Tue, Aug 19 - Wed, Aug 27
British Airways Logo
3:53 pm - 7:50 pmBWI-OPO
22h 57m2 stops
British Airways Logo
9:25 pm - 7:35 pmOPO-BWI
27h 10m1 stop
$734British Airways
Find Deal
Mon, Oct 13 - Sun, Oct 19
Iberia Logo
9:20 pm - 7:35 amBWI-OPO
29h 15m2 stops
Iberia Logo
8:35 pm - 7:45 pmOPO-BWI
28h 10m2 stops
$748Iberia
Find Deal
Fri, Oct 10 - Sat, Oct 25
 Logo
5:35 am - 9:55 pmBWI-OPO
35h 20m3 stops
 Logo
8:10 pm - 11:33 pmOPO-BWI
32h 23m2 stops
Mon, May 12 - Wed, May 21
British Airways Logo
9:20 pm - 7:50 pmBWI-OPO
17h 30m1 stop
British Airways Logo
9:55 am - 7:35 pmOPO-BWI
14h 40m1 stop
$764British Airways
Find Deal
Mon, Sep 15 - Thu, Oct 2
 Logo
5:35 am - 6:45 pmBWI-OPO
32h 10m3 stops
 Logo
7:35 am - 11:33 pmOPO-BWI
20h 58m2 stops
Fri, May 16 - Fri, May 23
Delta Logo
5:30 pm - 3:30 pmBWI-OPO
17h 00m2 stops
Delta Logo
6:15 am - 9:43 pmOPO-BWI
20h 28m2 stops
$804Delta
Find Deal
Wed, Oct 1 - Wed, Oct 8
Iberia Logo
9:20 pm - 7:35 amBWI-OPO
29h 15m2 stops
Iberia Logo
4:55 pm - 7:35 pmOPO-BWI
31h 40m2 stops
$1,049Iberia
Find Deal
Mon, May 12 - Wed, May 21
Useful Info

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.

What is the cheapest month to fly from Baltimore to Porto?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Baltimore to Porto, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Baltimore to Porto is January, where tickets cost $436 (return) on average. On the other hand, the most expensive months are August and May, where the average cost of round-trip tickets is $995 and $906 respectively.

Good to know

Low seasonJanuary
High seasonAugust
Cheapest flight$304
Best time to beat the crowds with an average 38% drop in price.
Most popular time to fly with an average 41% increase in price.
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 $304 for a one-way ticket and $587 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?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Baltimore and Porto, with oneworld being the most commonly used for this route.

  • 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.

Top airlines 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.
8.0
DeltaOverall score based on 7934 reviews
8.2Boarding
7.9Entertainment
8.5Crew
7.9Comfort
7.3Food
Airline reviews

Our bag was lost so that made unnecessary chaos On our trip

6.0 GoodBarbara, Apr 2025JFK - FCO
Read more Delta reviews

Our bag was lost so that made unnecessary chaos On our trip

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

It was an overnight flight and I desperately needed coffee before we landed, but Delta does only one beverage service, and that is shortly after takeoff, not before landing at 5 am.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

Cabin crew professional, polite and friendly, boarding was seemless, but come on KLM surely you can do better than a pack of cheesy biscuits as an inflight snack

Cabin crew were excellent, very proffesional, polite and friendly, in flight snack was underwhelming, a packet of cheese biscuits, im sure KLM could run to a sandwich!

Legroom not all it could be, especially when the seat in front is reclined. Otherwise it was good, food and beverage were nice.

You should not have to pay for WiFi in business class

Transfer at Amsterdam airport is very convenient and the airport is easy to navigate. Boarding was also quick and easy. Cabin crew were excellent and the meals were good, although lacking in options.

Overall very positive. Boarding was quick and organized. Cabin was clean and seats were reasonably comfortable. Cabin crew was excellent and the meals provided were also of good quality

This fight left ahead of time which meant it arrived early which was great. Staff were very professional, but as with all these Short hop Flights the food was a disappointing snack There was no entertainment on this flight, but I did not expect any

I flew premium economy and this was a good option. Although the seats didn’t recline much, I was able to get some sleep with my head propped against the window. The food was good and the entertainment was wonderful The staff were very attentive and professional

Overall very poor. Flight was disorganised, staff were rude and this is my second experience with KLM that I've had baggage go missing. It feels like, if you are an economy customer, KLM staff do not show you any care. I shall never fly with KLM again. Worst airline in Europe

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

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.