£118 Cheap Flights from Baltimore (BWI) to San Diego (SAN)

View £118 flight on Sat, 30 May 2026Opens in a new window

Popular airlines from Baltimore Washington International Airport (BWI) to San Diego Intl. Airport (SAN)

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 25% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Baltimore (BWI) to San Diego (SAN)

Prices were available within the past 7 days and start at £118 for one-way flights and £264 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, 30 May - Sat, 18 Jul
BWI
Baltimore
SAN
San Diego
£264 Return, found 1 day ago
£264
Return
found 1 day ago
Select American Airlines flight, departing Sat, 30 May from Baltimore to San Diego, returning Sat, 18 Jul, priced at £264 found 1 day ago
Delta
Sat, 30 May - Sat, 18 Jul
BWI
Baltimore
SAN
San Diego
£264 Return, found 1 day ago
£264
Return
found 1 day ago
Select Delta flight, departing Sat, 30 May from Baltimore to San Diego, returning Sat, 18 Jul, priced at £264 found 1 day ago
Delta
Fri, 29 May - Wed, 15 Jul
BWI
Baltimore
SAN
San Diego
£272 Return, found 2 days ago
£272
Return
found 2 days ago
Select Delta flight, departing Fri, 29 May from Baltimore to San Diego, returning Wed, 15 Jul, priced at £272 found 2 days ago
American Airlines
Sat, 30 May - Sat, 18 Jul
BWI
Baltimore
SAN
San Diego
£279 Return, found 1 day ago
£279
Return
found 1 day ago
Select American Airlines flight, departing Sat, 30 May from Baltimore to San Diego, returning Sat, 18 Jul, priced at £279 found 1 day ago
Alaska Airlines
Thu, 28 May - Wed, 3 Jun
BWI
Baltimore
SAN
San Diego
£284 Return, found 6 days ago
£284
Return
found 6 days ago
Select Alaska Airlines flight, departing Thu, 28 May from Baltimore to San Diego, returning Wed, 3 Jun, priced at £284 found 6 days ago
American Airlines
Sat, 30 May - Sat, 18 Jul
BWI
Baltimore
SAN
San Diego
£286 Return, found 1 day ago
£286
Return
found 1 day ago
Select American Airlines flight, departing Sat, 30 May from Baltimore to San Diego, returning Sat, 18 Jul, priced at £286 found 1 day ago
American Airlines
Sat, 30 May - Sat, 18 Jul
BWI
Baltimore
SAN
San Diego
£287 Return, found 1 day ago
£287
Return
found 1 day ago
Select American Airlines flight, departing Sat, 30 May from Baltimore to San Diego, returning Sat, 18 Jul, priced at £287 found 1 day ago
Alaska Airlines
Thu, 28 May - Wed, 3 Jun
BWI
Baltimore
SAN
San Diego
£287 Return, found 6 days ago
£287
Return
found 6 days ago
Select Alaska Airlines flight, departing Thu, 28 May from Baltimore to San Diego, returning Wed, 3 Jun, priced at £287 found 6 days ago
American Airlines
Sat, 30 May - Sat, 18 Jul
BWI
Baltimore
SAN
San Diego
£301 Return, found 1 day ago
£301
Return
found 1 day ago
Select American Airlines flight, departing Sat, 30 May from Baltimore to San Diego, returning Sat, 18 Jul, priced at £301 found 1 day ago
United
Sat, 30 May - Sat, 18 Jul
BWI
Baltimore
SAN
San Diego
£304 Return, found 1 day ago
£304
Return
found 1 day ago
Select United flight, departing Sat, 30 May from Baltimore to San Diego, returning Sat, 18 Jul, priced at £304 found 1 day ago

Frequently asked questions

How much does a flight from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Diego, CA (SAN-San Diego Intl.) cost?
One-way flights typically cost between £273 and £715 and return flights often range between £273 and £715. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Anaa (AAA) to Toronto, ON (YYZ-Pearson Intl.) ticket fares go up or down.
What is the cheapest month to fly from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Diego, CA (SAN-San Diego Intl.)?
February is typically the cheapest month to fly from Baltimore Washington Intl. Thurgood Marshall (BWI) to San Diego Intl. (SAN), with average return fares of approximately £481. This is about 14% lower than the average price throughout the year. February often sees lower prices as it's outside of peak holiday travel seasons. Other cheap months to fly from Baltimore Washington Intl. Thurgood Marshall (BWI) to San Diego Intl. (SAN) include January and September.
Which airlines fly direct from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Diego, CA (SAN-San Diego Intl.)?
Enter BWI to SAN and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Diego, CA (SAN-San Diego Intl.)?
To find a cheap flight from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Diego, CA (SAN-San Diego Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Diego, CA (SAN-San Diego Intl.)?
The best airline to fly with from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Diego, CA (SAN-San Diego Intl.) will differ from traveller to traveller. If you like to fly early, WN offers early morning flights. If price is the most important factor, WN typically offers the lowest fares. WN offers the most daily flights from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Diego, CA (SAN-San Diego Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Diego, CA (SAN-San Diego Intl.)?
When looking for the best time to fly from Baltimore Washington Intl. Thurgood Marshall (BWI) to San Diego Intl. (SAN), it's a good idea to balance price and availability. Based on booking data from the past year, February and September tend to be the cheapest months, with average return flights around £481. While March is a popular month for travel, offering plenty of flight options, it's not one of the cheapest. Therefore, if you're looking for the best value, aiming for February or September will likely give you the most budget-friendly options.
How many flights per day from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Diego, CA (SAN-San Diego Intl.)?
There are approximately 3 nonstop flights per day from Baltimore Washington Intl. Thurgood Marshall (BWI) to San Diego Intl. (SAN). For even more choice, look at flights that include layovers, as there are around 148 connecting flights per day. Some common connection points include Seattle - Tacoma Intl. (SEA), O'Hare Intl. (ORD), and Hartsfield-Jackson Atlanta Intl. (ATL).
What is the earliest flight from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Diego, CA (SAN-San Diego Intl.)?
The earliest flight from Baltimore Washington Intl. Thurgood Marshall (BWI) to San Diego Intl. (SAN) typically departs at approximately 5:00 AM local time, operated by American Airlines. This is a seasonal service active in December. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Diego, CA (SAN-San Diego Intl.)?
You'll typically find the most flights from Baltimore Washington Intl. Thurgood Marshall (BWI) to San Diego Intl. (SAN) on a Thursday, with around 77 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Southwest Airlines, Delta Air Lines, and United Airlines. Flight schedules are consistent throughout the week.
What are the most popular departure times for flights from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Diego, CA (SAN-San Diego Intl.)?
The most popular departure times for flights from Baltimore Washington Intl. Thurgood Marshall (BWI) to San Diego Intl. (SAN) are in the early morning, from 6am to 9am. About 35% of passengers prefer this time. Southwest Airlines and Delta offer flights during this window. This timing works well because you can get an early start to your travel day and arrive in San Diego with plenty of time to settle in.
How long does it take to fly from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Diego, CA (SAN-San Diego Intl.)?
A nonstop flight from BWI to SAN typically takes around 5 hours 20 minutes, covering approximately 2,291 miles. Connecting flights on this route usually add 2 hours 30 minutes to your travel time. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Diego, CA (SAN-San Diego Intl.)?
Select the "Business class" and "First class" filters when looking for BWI to SAN flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Diego, CA (SAN-San Diego Intl.) flight with Expedia?
It's easy to earn miles on a Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Diego, CA (SAN-San Diego Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for San Diego from Baltimore Washington Intl. Thurgood Marshall (BWI)?
If you're planning to travel to San Diego from Baltimore Washington Intl. Thurgood Marshall (BWI), you can fly directly into San Diego Intl. (SAN) Some flights may connect through major hubs like Seattle - Tacoma Intl. (SEA), O'Hare Intl. (ORD), Denver Intl. (DEN) before reaching San Diego. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Diego, CA (SAN-San Diego Intl.) at the last minute?
Typically, booking a last minute flight from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Diego, CA (SAN-San Diego Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Diego, CA (SAN-San Diego Intl.) flight and hotel package?
Securing a Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Diego, CA (SAN-San Diego Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Diego, CA (SAN-San Diego Intl.)?
If you booked your Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Diego, CA (SAN-San Diego Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
San Diego Intl.
Airlines serving
Alaska Airlines
Return price
£264
Distance
3664 km
Average flight time
3 hours 30 mins

Book with confidence

Compare flights from Baltimore to San Diego easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Baltimore to San Diego. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to San Diego Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Baltimore Washington Intl. Thurgood Marshall to San Diego Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Baltimore Washington Intl. Thurgood Marshall (BWI) to San Diego Intl. (SAN)

The easiest way to view the best deals on flights from Baltimore to San Diego today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Baltimore Washington Intl. Thurgood Marshall to San Diego Intl. start at just £264 and range up to £304.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Baltimore and San Diego
  • booking your flight during May, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Baltimore to San Diego flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Baltimore Washington Intl. Thurgood Marshall to San Diego Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Baltimore to San Diego easily and book with confidence

Explore a world of travel with Expedia

*Available to Expedia members.