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$89+ Cheap flights from Baltimore to San Diego (BWI - SAN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — SAN
Jun 2 — Jun 91
Tue 6/2
Tue 6/9
1 adult, Economy
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Find cheap flights from Baltimore to San Diego with Cheapflights

1. Tell us where you want to go

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2. Select your favorite providers

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3. Compare prices and book

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Cheapflights Tip: The best prices from Baltimore/Washington to San Diego are usually found in July or February, booked 16 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Baltimore to San Diego

Cheapest flights from Baltimore to San Diego
Explore the most affordable flight options available from Baltimore to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 3, 2026.

This Kiwi.com deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/85:17 pm
BWI
-
SAN
2 stops18h 31m
Frontier
Mon 6/156:25 am
SAN
-
BWI
1 stop30h 27m
Frontier
Deal found 5/1$292
This Frontier deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/410:58 am
BWI
-
SAN
1 stop15h 03m
Frontier
Wed 5/276:25 am
SAN
-
BWI
1 stop8h 00m
Frontier
Deal found 5/1$295
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/269:13 pm
BWI
-
SAN
2 stops29h 37m
Frontier
Tue 6/26:25 am
SAN
-
BWI
1 stop8h 00m
Frontier
Deal found 4/28$305
This Kiwi.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3010:10 am
BWI
-
SAN
2 stops29h 33m
Frontier
Wed 6/36:25 am
SAN
-
BWI
1 stop8h 00m
Frontier
Deal found 4/29$308
This Orbitz deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/124:19 pm
BWI
-
SAN
1 stop20h 46m
Multiple Airlines
Wed 8/196:25 am
SAN
-
BWI
1 stop8h 42m
Multiple Airlines
Deal found 5/2$309
This Kiwi.com deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/126:36 am
BWI
-
SAN
2 stops17h 22m
Frontier
Wed 8/196:25 am
SAN
-
BWI
1 stop8h 42m
Frontier
Deal found 5/3$312
This Kiwi.com deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/118:31 am
BWI
-
SAN
2 stops18h 22m
Frontier
Mon 6/156:25 am
SAN
-
BWI
1 stop30h 27m
Frontier
Deal found 5/1$315
This Delta deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/237:00 am
BWI
-
SAN
1 stop8h 38m
Delta
Sat 5/3010:15 pm
SAN
-
BWI
1 stop7h 18m
Delta
Deal found 4/29$316
This Southwest deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/307:55 pm
BWI
-
SAN
Nonstop5h 40m
Southwest
Wed 6/37:00 pm
SAN
-
BWI
1 stop7h 40m
Southwest
Deal found 4/29$317
This Expedia deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/294:17 pm
BWI
-
SAN
1 stop20h 41m
Multiple Airlines
Tue 6/26:25 am
SAN
-
BWI
1 stop8h 00m
Multiple Airlines
Deal found 4/28$319
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/236:45 am
BWI
-
SAN
2 stops28h 57m
Frontier
Fri 5/296:25 am
SAN
-
BWI
1 stop8h 00m
Frontier
Deal found 4/28$322
This Expedia deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/274:34 pm
BWI
-
SAN
1 stop20h 31m
Multiple Airlines
Sun 8/306:25 am
SAN
-
BWI
1 stop8h 42m
Multiple Airlines
Deal found 5/1$324

Find flight deals from Baltimore to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Baltimore (BWI) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$289
(Kiwi.com)

One-way from

$89
(Kiwi.com)

Popular in

June

Cheapest in

July

Average price

$377
Provider with most accurate pricing for Baltimore/Washington-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Baltimore/Washington-San Diego flights.
Search Deals
From Baltimore/Washington to San Diego
Search Deals
One-way flight from Baltimore/Washington to San Diego
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($18 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Baltimore to San Diego that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 3, 2026.
Use the filters below to find and compare flights from Baltimore to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Sun 5/31

8:20 am-1:45 pm

1 stop8h 25m

San Diego

Wed 6/3

11:30 am-9:30 pm

1 stop7h 00m

$317

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Fri 5/29

10:40 am-2:50 pm

1 stop7h 10m

San Diego

Mon 6/1

3:40 pm-11:30 pm

Nonstop4h 50m

$337

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Sat 5/23

7:55 pm-10:35 pm

Nonstop5h 40m

San Diego

Sat 5/30

10:40 pm-8:00 am

1 stop6h 20m

$337
Quickest round-trip

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Thu 6/25

9:05 pm-11:20 pm

Nonstop5h 15m

San Diego

Mon 7/6

9:40 pm-5:35 am

Nonstop4h 55m

$377

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Fri 10/2

6:10 am-8:40 am

Nonstop5h 30m

San Diego

Wed 10/7

9:50 pm-5:45 am

Nonstop4h 55m

$377

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Wed 8/12

6:35 am-10:40 am

1 stop7h 05m

San Diego

Wed 8/19

10:40 pm-6:35 am

Nonstop4h 55m

$387

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Fri 7/24

6:20 am-8:35 am

Nonstop5h 15m

San Diego

Wed 7/29

7:15 pm-5:35 am

1 stop7h 20m

$387

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Wed 6/24

9:10 pm-11:25 pm

Nonstop5h 15m

San Diego

Tue 6/30

10:40 pm-9:40 am

1 stop8h 00m

$387

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Tue 7/7

8:25 am-1:45 pm

1 stop8h 20m

San Diego

Mon 7/13

9:40 pm-5:35 am

Nonstop4h 55m

$387

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Thu 8/6

6:35 am-8:55 am

Nonstop5h 20m

San Diego

Tue 8/11

7:00 pm-6:35 am

1 stop8h 35m

$387

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 24 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Baltimore to San Diego

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Baltimore to San Diego in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
eDreamsPrice Accuracy2 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
PricelinePrice Accuracy1 starTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Baltimore-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Baltimore-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Baltimore-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Baltimore-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Baltimore-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Baltimore to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Baltimore with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Baltimore to San Diego

How far ahead should I book a flight from Baltimore to San Diego?

Booking 15 days in advance of your planned departure date is, on average, the best time to get cheap flights from Baltimore to San Diego. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Baltimore to San Diego?

Currently, July is the cheapest month in which you can book a flight from Baltimore to San Diego (average of $354). Flying from Baltimore to San Diego in June is currently the most expensive (average of $496). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BWI to SAN?

Find hourly flight availability from Baltimore to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 3, 2026.

It’s typically best to fly out from Baltimore to San Diego in the evening. Doing so could potentially save you 38% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Baltimore to San Diego?

Use this chart to determine the cheapest time to fly round-trip from Baltimore to San Diego. Price data was last updated on April 25, 2026.

Travelers seeking maximum savings on their Baltimore to San Diego flight should consider departing on Saturday afternoons when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Baltimore to San Diego?

The best insider tips for Baltimore to San Diego flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Baltimore to San Diego trip
Our travel experts
Blane Bachelor

Blane Bachelor

Expert on SAN

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Emily Zemler

Emily Zemler

Expert on BWI

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Read more

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated May 3, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from Baltimore to San Diego have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,312 reviews

Boarding

8.1

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,312 reviews
Southwest
8.0
Very good
4,312 reviews

Boarding

8.1

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,460 reviews
Southwest
8.0
Very good
4,312 reviews

Boarding

8.1

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,681 reviews
Southwest
8.0
Very good
4,312 reviews

Boarding

8.1

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,672 reviews
Southwest
8.0
Very good
4,312 reviews

Boarding

8.1

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Frontier
5.6
Fair
2,970 reviews
Southwest
8.0
Very good
4,312 reviews

Boarding

8.1

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Related info for your journey

Find useful and relevant information for your journey from Baltimore to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Baltimore to San Diego?

    Booking a flight from Baltimore/Washington (BWI) to San Diego (SAN) is your only option if you wish to fly from Baltimore to San Diego. On a typical day, there are 3 flights from Baltimore/Washington to San Diego, all of which are around 5h 15m for a nonstop flight. You can also purchase a plane ticket from 8 airlines when you book a flight from Baltimore/Washington to San Diego.

  • How popular is this Baltimore to San Diego flight route?

    Within the past month, 5 users have taken a look at flights from Baltimore/Washington to San Diego.

  • How long is the flight from Baltimore to San Diego?

    Departing from Baltimore to San Diego will take you 8h 25m. The distance from Baltimore to San Diego is about 2289 mi.

  • What are the cheapest airlines flying from Baltimore to San Diego round-trip?

    Our cheapest airline available from Baltimore to San Diego is Spirit Airlines. Our recent data shows that you can find tickets from as low as $89 on this airline. Additional options worth looking into are Frontier and JetBlue, starting at $117 and $192 round-trip. You may be able to fly from Baltimore to San Diego for 77% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Baltimore to San Diego one-way?

    To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $73. Frontier flights start at $83 while deals on American Airlines start at $128 one-way.

  • What are the cheapest flights from Baltimore to San Diego?

    Looking at all options, your cheapest flight can be booked for $148. While the most popular route (Baltimore/Washington - San Diego) can be booked for $299 on average, our data indicates $364 when flying from Baltimore to San Diego.

  • Can I find deals for flights from Baltimore to San Diego that include hotel bookings?

    Yes. In addition to deals on Baltimore to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Baltimore to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Baltimore to San Diego.

  • Can I find deals for business class flights from Baltimore to San Diego?

    Yes. Cheapflights offers flight deals from Baltimore to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Baltimore to San Diego?

    Currently, July is the cheapest month in which you can book a flight from Baltimore to San Diego (average of $354). Flying from Baltimore to San Diego in June is currently the most expensive (average of $496). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove

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Alternative routes for Baltimore to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Baltimore to San Diego

Discover the top 8 airlines that operate flights from Baltimore to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$89Average$216FlexibilityNo cancel feeOn-time65%
FrontierCheapest$117Average$222FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$192Average$381FlexibilityNo cancel feeOn-time62%
DeltaCheapest$199Average$357FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$238Average$391FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$257Average$393FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$260Average$455FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$277Average$349FlexibilityNo cancel feeOn-time75%

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