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£52 Cheap Flights from Baltimore (BWI) to San Diego (SAN)

View £52 flight on Tue, 15 Sept 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at £52 for one-way flights and £103 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, 4 Nov - Sat, 14 Nov
BWI
Baltimore
SAN
San Diego
£103 Return, found 4 days ago
£103
Return
found 4 days ago
Select Alaska Airlines flight, departing Wed, 4 Nov from Baltimore to San Diego, returning Sat, 14 Nov, priced at £103 found 4 days ago
Alaska Airlines
Sat, 14 Nov - Wed, 18 Nov
BWI
Baltimore
SAN
San Diego
£141 Return, found 2 days ago
£141
Return
found 2 days ago
Select Alaska Airlines flight, departing Sat, 14 Nov from Baltimore to San Diego, returning Wed, 18 Nov, priced at £141 found 2 days ago
Alaska Airlines
Tue, 6 Oct - Fri, 16 Oct
BWI
Baltimore
SAN
San Diego
£148 Return, found 5 days ago
£148
Return
found 5 days ago
Select Alaska Airlines flight, departing Tue, 6 Oct from Baltimore to San Diego, returning Fri, 16 Oct, priced at £148 found 5 days ago
Alaska Airlines
Tue, 10 Nov - Wed, 2 Dec
BWI
Baltimore
SAN
San Diego
£189 Return, found 5 days ago
£189
Return
found 5 days ago
Select Alaska Airlines flight, departing Tue, 10 Nov from Baltimore to San Diego, returning Wed, 2 Dec, priced at £189 found 5 days ago
Alaska Airlines
Wed, 4 Nov - Sat, 14 Nov
BWI
Baltimore
SAN
San Diego
£204 Return, found 4 days ago
£204
Return
found 4 days ago
Select Alaska Airlines flight, departing Wed, 4 Nov from Baltimore to San Diego, returning Sat, 14 Nov, priced at £204 found 4 days ago
Alaska Airlines
Thu, 17 Sept - Tue, 22 Sept
BWI
Baltimore
SAN
San Diego
£205 Return, found 3 days ago
£205
Return
found 3 days ago
Select Alaska Airlines flight, departing Thu, 17 Sept from Baltimore to San Diego, returning Tue, 22 Sept, priced at £205 found 3 days ago
Alaska Airlines
Mon, 19 Oct - Fri, 23 Oct
BWI
Baltimore
SAN
San Diego
£219 Return, found 5 days ago
£219
Return
found 5 days ago
Select Alaska Airlines flight, departing Mon, 19 Oct from Baltimore to San Diego, returning Fri, 23 Oct, priced at £219 found 5 days ago
Delta
Sat, 3 Oct - Wed, 21 Oct
BWI
Baltimore
SAN
San Diego
£246 Return, found 5 days ago
£246
Return
found 5 days ago
Select Delta flight, departing Sat, 3 Oct from Baltimore to San Diego, returning Wed, 21 Oct, priced at £246 found 5 days ago
American Airlines
Thu, 12 Nov - Sun, 15 Nov
BWI
Baltimore
SAN
San Diego
£298 Return, found 5 days ago
£298
Return
found 5 days ago
Select American Airlines flight, departing Thu, 12 Nov from Baltimore to San Diego, returning Sun, 15 Nov, priced at £298 found 5 days ago
United
Sat, 10 Oct - Sun, 25 Oct
BWI
Baltimore
SAN
San Diego
£354 Return, found 5 days ago
£354
Return
found 5 days ago
Select United flight, departing Sat, 10 Oct from Baltimore to San Diego, returning Sun, 25 Oct, priced at £354 found 5 days ago

Alternative airports near San Diego

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to San Diego Intl. SAN. Cheapest and Closest option available. Average driving time to city centre is 5 minutes. Flights from £332
SAN
San Diego Intl.
CheapestClosest
Average driving time to city centre5 min
Flights from £332

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?
You can find cheap one-way flights from £52 and cheap return flights from £103 BWI to SAN with Expedia. Return flights often range between £291 and £1425. 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 BWI to SAN 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 International Thurgood Marshall (BWI) to San Diego International (SAN), with average return fares around £259. February often sees lower prices because it falls after the holiday travel rush, when demand drops and airlines compete for bookings. January and September are also good months to find deals on this route.
Which airlines fly direct from Baltimore, MD (BWI) to San Diego, CA (SAN)?
Enter BWI to SAN and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Diego, CA (SAN-San Diego Intl.)?
Southwest Airlines is one of the cheapest airlines offering nonstop return flights from Baltimore Washington Intl. Thurgood Marshall (BWI) to San Diego Intl. (SAN), with tickets starting from around £147 for flights that can be booked for departure within the next year. Sun Country Airlines is one of the cheapest airlines offering connecting return flights from Baltimore Washington Intl. Thurgood Marshall (BWI) to San Diego Intl. (SAN), with tickets starting from around £214. These prices are per adult for economy/coach class. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
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 traveler to traveler. If you like to fly early, Southwest Airlines offers early morning flights. If price is the most important factor, Southwest Airlines typically offers the lowest fares. Southwest Airlines 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.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Diego, CA (SAN-San Diego Intl.)?
You'll find approximately 3 nonstop flights per day from Baltimore Washington Intl. Thurgood Marshall (BWI) to San Diego Intl. (SAN). For even more choices, look at flights that include layovers, as there are around 149 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) to San Diego, CA (SAN)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from Baltimore, MD (BWI) to San Diego, CA (SAN). To compare more early flights, use 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 80 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include Southwest Airlines, Delta, and United. Flight schedules are fairly consistent throughout the week, with Thursday offering only slightly more flights than other days.
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. Many major carriers, including Southwest Airlines, Delta and United, offer flights during this window. Many travellers prefer these times because it allows for an early start to their journey and an arrival in San Diego with plenty of the day left.
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 50 minutes, covering approximately 3,687 kilometers. Connecting flights on this route usually add 2 hours 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.)?
Yes, you can fly business class or first class between BWI and SAN.Airlines that offer business class service on this route include:
  • Frontier Airlines
  • Delta
First class cabins are available on:
  • Alaska Airlines
  • United
  • Delta
  • American Airlines
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.
Is it cheaper to buy a plane ticket from Baltimore, MD (BWI) to San Diego, CA (SAN) at the last minute?
Typically, booking a last minute flight from Baltimore, MD (BWI) to San Diego, CA (SAN) 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) to San Diego, CA (SAN) flight and hotel package?
Securing a Baltimore, MD (BWI) to San Diego, CA (SAN) 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
£102
Distance
3664 km
Average flight time
3 hours 18 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 £103 and range up to £354.  

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 November, 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

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*Available to Expedia members.