Which layover airport offers the lowest fares from Baltimore to San Diego?

Flights via Las Vegas (LAS) offer the lowest average round-trip price of $321.

What airlines fly to San Diego?

United Airlines, Southwest and American Airlines are the top three most popular airlines that fly to San Diego from Baltimore according to our data. United Airlines is the first choice among our users, with 38% of people opting to fly with this airline when traveling to San Diego. Keep in mind that there are 8 different airlines that fly to San Diego on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest travel time from Baltimore to San Diego?

Flights connecting via Houston (IAH) have the shortest average one-way travel time: 7h 55m.

What is the cheapest airline that flies from Baltimore/Washington to San Diego?

Spirit Airlines, Frontier, and Alaska Airlines are the most popular carriers operating from Baltimore/Washington to San Diego

Which airport is the most popular layover for flights between Baltimore and San Diego?

Las Vegas (LAS) was the most common stop: 81% of momondo users choosing 1-stop flights on this route connected there.

How many flights depart from Baltimore to San Diego on average per week?

As of August 2025, 20 flights take off from Baltimore and land in San Diego each week. The most common flight departure day for this route is Mon, with 25% of weekly flights taking off on this day.

Which layover airport has the shortest connection time from Baltimore to San Diego?

Houston (IAH) has the shortest average layover time for this route: 1h 13m.

How many flights depart from Baltimore to San Diego on average per day?

The number of flights available between Baltimore and San Diego is 2 per day as of August 2025. The most frequent departure time is 1:00PM, with 57% of daily flights leaving in the afternoon.

When did momondo last update prices for flights from Baltimore/Washington Airport to San Diego Airport?

Prices for flights from Baltimore/Washington Airport to San Diego Airport refresh daily.

How many operators does momondo search for flights from Baltimore/Washington Airport to San Diego Airport?

As of August 2025, there are 7 operators available to choose from for flights from Baltimore/Washington Airport to San Diego Airport.

How old do you have to be to fly from Baltimore/Washington Airport to San Diego Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Baltimore/Washington Airport to San Diego Airport.

What documentation or ID do you need to fly to San Diego Airport?

The required travel and health documents for your San Diego Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Diego Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$91 Cheap Flights from Baltimore to San Diego in 2025

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Find the cheapest flights from Baltimore to San Diego

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

6:26 pm - 11:17 pmBWI-SAN

7h 51m1 stop

3:23 pm - 5:21 pmSAN-BWI

22h 58m1 stop

$218

Find Deal

Wed, Oct 8 - Mon, Oct 13

7:50 am - 9:20 pmBWI-SAN

16h 30m1 stop

8:00 am - 4:30 amSAN-BWI

17h 30m1 stop

$219

Find Deal

Wed, Oct 15 - Tue, Oct 21

5:45 am - 7:29 amBWI-SAN

28h 44m2 stops

1:35 pm - 4:30 amSAN-BWI

11h 55m1 stop

$220Spirit Airlines

Find Deal

Tue, Sep 16 - Tue, Sep 23

6:26 pm - 11:17 pmBWI-SAN

7h 51m1 stop

8:21 am - 4:30 amSAN-BWI

17h 09m1 stop

$221Spirit Airlines

Find Deal

Thu, Oct 30 - Mon, Nov 3

8:16 am - 6:30 pmBWI-SAN

13h 14m1 stop

12:33 pm - 4:30 amSAN-BWI

12h 57m1 stop

$222

Find Deal

Sat, Sep 27 - Mon, Sep 29

5:41 pm - 7:29 amBWI-SAN

16h 48m2 stops

1:35 pm - 4:30 amSAN-BWI

11h 55m1 stop

$224Spirit Airlines

Find Deal

Fri, Sep 19 - Tue, Sep 23

6:27 pm - 11:09 amBWI-SAN

19h 42m1 stop

9:03 pm - 5:42 pmSAN-BWI

17h 39m1 stop

$227Frontier

Find Deal

Sun, Sep 14 - Thu, Sep 18

5:35 am - 11:17 pmBWI-SAN

20h 42m2 stops

1:34 pm - 4:30 amSAN-BWI

11h 56m1 stop

$228Spirit Airlines

Find Deal

Tue, Oct 14 - Tue, Oct 21

9:42 pm - 9:57 amBWI-SAN

15h 15m2 stops

7:23 pm - 10:18 amSAN-BWI

11h 55m1 stop

$242Frontier

Find Deal

Sun, Oct 19 - Thu, Oct 23

6:17 pm - 11:50 pmBWI-SAN

8h 33m1 stop

6:41 am - 11:53 pmSAN-BWI

14h 12m2 stops

$254Frontier

Find Deal

Fri, Oct 17 - Tue, Oct 21

Spirit Airlines flights from Baltimore to San Diego

Our best Spirit Airlines deals on Baltimore to San Diego flight tickets

Spirit Airlines

Sep 16

BWI5:45 amBaltimore/Washington

28h 44m

2 stops

SAN7:29 amSan Diego

Sep 23

SAN1:35 pmSan Diego

11h 55m

1 stop

BWI4:30 amBaltimore/Washington

$220

Find similar

Spirit Airlines

Oct 30

BWI6:26 pmBaltimore/Washington

7h 51m

1 stop

SAN11:17 pmSan Diego

Nov 3

SAN8:21 amSan Diego

17h 09m

1 stop

BWI4:30 amBaltimore/Washington

$221

Find similar

Spirit Airlines

Sep 19

BWI5:41 pmBaltimore/Washington

16h 48m

2 stops

SAN7:29 amSan Diego

Sep 23

SAN1:35 pmSan Diego

11h 55m

1 stop

BWI4:30 amBaltimore/Washington

$224

Find similar

Frontier flights from Baltimore to San Diego

Our best Frontier deals on Baltimore to San Diego flight tickets

Frontier

Sep 14

BWI6:27 pmBaltimore/Washington

19h 42m

1 stop

SAN11:09 amSan Diego

Sep 18

SAN9:03 pmSan Diego

17h 39m

1 stop

BWI5:42 pmBaltimore/Washington

$227

Find similar

Frontier

Oct 19

BWI9:42 pmBaltimore/Washington

15h 15m

2 stops

SAN9:57 amSan Diego

Oct 23

SAN7:23 pmSan Diego

11h 55m

1 stop

BWI10:18 amBaltimore/Washington

$242

Find similar

Frontier

Oct 17

BWI6:17 pmBaltimore/Washington

8h 33m

1 stop

SAN11:50 pmSan Diego

Oct 21

SAN6:41 amSan Diego

14h 12m

2 stops

BWI11:53 pmBaltimore/Washington

$254

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Wed 10/8

6:26 pm-11:17 pm

1 stop7h 51m

San Diego

Mon 10/13

3:23 pm-5:21 pm

1 stop22h 58m

$218

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Wed 10/15

7:50 am-9:20 pm

1 stop16h 30m

San Diego

Tue 10/21

8:00 am-4:30 am

1 stop17h 30m

$219

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Tue 9/16

5:45 am-7:29 am

2 stops28h 44m

San Diego

Tue 9/23

1:35 pm-4:30 am

1 stop11h 55m

$220

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Thu 10/30

6:26 pm-11:17 pm

1 stop7h 51m

San Diego

Mon 11/3

8:21 am-4:30 am

1 stop17h 09m

$221

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Sat 9/27

8:16 am-6:30 pm

1 stop13h 14m

San Diego

Mon 9/29

12:33 pm-4:30 am

1 stop12h 57m

$222

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Fri 9/19

5:41 pm-7:29 am

2 stops16h 48m

San Diego

Tue 9/23

1:35 pm-4:30 am

1 stop11h 55m

$224

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Sun 9/14

6:27 pm-11:09 am

1 stop19h 42m

San Diego

Thu 9/18

9:03 pm-5:42 pm

1 stop17h 39m

$227

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Tue 10/14

5:35 am-11:17 pm

2 stops20h 42m

San Diego

Tue 10/21

1:34 pm-4:30 am

1 stop11h 56m

$228

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Sun 10/19

9:42 pm-9:57 am

2 stops15h 15m

San Diego

Thu 10/23

7:23 pm-10:18 am

1 stop11h 55m

$242

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Fri 10/17

6:17 pm-11:50 pm

1 stop8h 33m

San Diego

Tue 10/21

6:41 am-11:53 pm

2 stops14h 12m

$254

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from Baltimore to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

Other information

What is the cheapest month to fly to San Diego?

If you are unable to visit San Diego during the month of August, then departing from Baltimore during the month July is also very affordable. Most momondo users find prices during this month for around $354.

What is the cheapest day to depart on your flight to San Diego?

The cheapest day to depart from Baltimore to San Diego is on a Wednesday. Travelers who choose to depart for San Diego on a Wednesday will often find tickets for as low as $390. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $478. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.

What is the cheapest time of day to depart on your flight to San Diego?

The cheapest time of day to fly to San Diego is in the evening when flights can be purchased for as low as $339. Flights at noon are often more expensive with an average ticket price of $479.

What is the cheapest Baltimore/Washington to San Diego flight route?

Fly from Baltimore/Washington to San Diego for the best Baltimore/Washington - San Diego flight prices

How far in advance should I book a flight to San Diego?

You are more likely to see cheaper flights to San Diego from Baltimore when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $439 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from Baltimore for as low as $370 on momondo.

What cabin class options are available on Baltimore/Washington to San Diego flights?

There is only 1 cabin class available to choose from on Baltimore/Washington to San Diego flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Baltimore to San Diego flight prices changed over time?

As of August 2025, prices for Baltimore to San Diego flights are approximately 23% cheaper when compared to flights at the same time last year.

When to book flights from Baltimore to San Diego

Are you open to changing your travel dates? Check out the ideal times to fly from Baltimore to San Diego according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Baltimore to San Diego (BWI to SAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Baltimore to San Diego

Best Price Found	$189
Fastest flight time	5h 20m
Direct flights	Every day
Airports in San Diego	1 airport

The best one-way flight to San Diego from Baltimore in the past 72 hours is $189. The best round-trip flight deal from Baltimore to San Diego found on momondo in the last 72 hours is $312.

The fastest flight from Baltimore to San Diego takes 5h 20m

Direct flights go from Baltimore to San Diego every day.

There is 1 airport near San Diego: San Diego (SAN)

Search flight deals

How far is Baltimore/Washington to San Diego by plane?
The straight-line distance from Baltimore/Washington to San Diego is 2290.1 mi. Typically, this will take 7h 32m by plane in normal conditions.
When did momondo last update prices for flights from Baltimore/Washington Airport to San Diego Airport?
Prices for flights from Baltimore/Washington Airport to San Diego Airport refresh daily.
How many operators does momondo search for flights from Baltimore/Washington Airport to San Diego Airport?
As of August 2025, there are 7 operators available to choose from for flights from Baltimore/Washington Airport to San Diego Airport.
How old do you have to be to fly from Baltimore/Washington Airport to San Diego Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Baltimore/Washington Airport to San Diego Airport.
What documentation or ID do you need to fly to San Diego Airport?
The required travel and health documents for your San Diego Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Diego Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Baltimore to San Diego?
momondo data reveals that the most frequently booked plane model on the route from Baltimore to San Diego is Boeing 737-800 Passenger/BBJ2 (winglets), representing 22.46% of all bookings. The subsequent popular models are Boeing 737 MAX 8 at 20.81%, Boeing 737 MAX 9 at 19.46%, and Boeing 737-700 Passenger/BBJ1 (winglets) at 13.17%.
What is the most popular airline from Baltimore to San Diego?
momondo data reveals that the most frequently booked airline on the route from Baltimore to San Diego is Southwest, representing 54% of all bookings. The subsequent popular airlines are Spirit Airlines at 17%, Delta at 8%, and American Airlines at 8%.

Best airlines flying from Baltimore to San Diego

Compare and see reviews for airlines that fly from Baltimore to San Diego with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $130	Free Cancellation	Rating 5.8 3,202 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $148	Free Cancellation	Rating 6.3 8,013 reviews	Search Spirit Airlines flights
Alaska Airlines	PriceFrom $211	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $257	Free Cancellation	Rating 7.4 8,942 reviews	Search United Airlines flights
American Airlines	PriceFrom $260	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Delta	PriceFrom $276	Free Cancellation	Rating 7.9 7,976 reviews	Search Delta flights
Southwest	PriceFrom $307	Free Cancellation	Rating 8.0 4,241 reviews	Search Southwest flights

Southwest Flights From Baltimore to San Diego
The lowest priced Southwest flight from Baltimore to San Diego from the last 72 hours was $307. Generally, Southwest has 16 flights on this route every week with an average price of $498. Southwest is rated 8.0/10 by our users.
United Airlines Flights From Baltimore to San Diego
United Airlines (7.4/10 from 8,942 reviews) operates around 4 flights from Baltimore to San Diego in any given week. The average United Airlines airfare for this route is around $479, with deals from around $257 rare but found on momondo. Referenced prices are for round-trip Baltimore to San Diego flight searches in the last 72 hours.

Coronado

Chula Vista

El Cajon

Julian

La Mesa

National City

Imperial Beach

Poway

San Ysidro

Borrego Springs

Alpine

Lemon Grove

Santee

Why use momondo?

Why should I use momondo to find a flight deal from Baltimore to San Diego?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Baltimore to San Diego. momondo saves you time and could save you money on your trip.

Can I find flights from Baltimore to San Diego with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to San Diego from Baltimore with this policy.

How can momondo help me find flights from Baltimore to San Diego?

momondo provides multiple filters to help you find the best flight to San Diego from Baltimore. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Baltimore to San Diego right now. Can momondo alert me if prices change?

If you are simply researching potential flights to San Diego, momondo offers a useful price alert feature which will track prices for flights to San Diego from Baltimore and alert you when they change.

An easier way to manage your San Diego trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Cheap flights from Baltimore to San Diego from $91

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Baltimore to San Diego departing on 10/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Spirit Airlines flights from Baltimore to San Diego

Our best Spirit Airlines deals on Baltimore to San Diego flight tickets

Frontier flights from Baltimore to San Diego

Our best Frontier deals on Baltimore to San Diego flight tickets

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See travel insights to San Diego from

How to get the cheapest flight ticket from Baltimore to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Diego?

If you are unable to visit San Diego during the month of August, then departing from Baltimore during the month July is also very affordable. Most momondo users find prices during this month for around $354.

What is the cheapest day to depart on your flight to San Diego?

What is the cheapest time of day to depart on your flight to San Diego?

The cheapest time of day to fly to San Diego is in the evening when flights can be purchased for as low as $339. Flights at noon are often more expensive with an average ticket price of $479.

What is the cheapest Baltimore/Washington to San Diego flight route?

Fly from Baltimore/Washington to San Diego for the best Baltimore/Washington - San Diego flight prices

How far in advance should I book a flight to San Diego?

What cabin class options are available on Baltimore/Washington to San Diego flights?

There is only 1 cabin class available to choose from on Baltimore/Washington to San Diego flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Baltimore to San Diego flight prices changed over time?

As of August 2025, prices for Baltimore to San Diego flights are approximately 23% cheaper when compared to flights at the same time last year.

What is the cheapest airline that flies from Baltimore/Washington to San Diego?

Spirit Airlines, Frontier, and Alaska Airlines are the most popular carriers operating from Baltimore/Washington to San Diego

What airlines fly to San Diego?

Which airport is the most popular layover for flights between Baltimore and San Diego?

Las Vegas (LAS) was the most common stop: 81% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Baltimore to San Diego?

Flights via Las Vegas (LAS) offer the lowest average round-trip price of $321.

Which layover airport has the shortest travel time from Baltimore to San Diego?

Flights connecting via Houston (IAH) have the shortest average one-way travel time: 7h 55m.

Which layover airport has the shortest connection time from Baltimore to San Diego?

Houston (IAH) has the shortest average layover time for this route: 1h 13m.

How many flights depart from Baltimore to San Diego on average per day?

The number of flights available between Baltimore and San Diego is 2 per day as of August 2025. The most frequent departure time is 1:00PM, with 57% of daily flights leaving in the afternoon.

How many flights depart from Baltimore to San Diego on average per week?

As of August 2025, 20 flights take off from Baltimore and land in San Diego each week. The most common flight departure day for this route is Mon, with 25% of weekly flights taking off on this day.

When to book flights from Baltimore to San Diego

Cheap Baltimore to San Diego (BWI to SAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Baltimore to San Diego

Best Price Found

Fastest flight time

Direct flights

Airports in San Diego

How far is Baltimore/Washington to San Diego by plane?

When did momondo last update prices for flights from Baltimore/Washington Airport to San Diego Airport?

How many operators does momondo search for flights from Baltimore/Washington Airport to San Diego Airport?

How old do you have to be to fly from Baltimore/Washington Airport to San Diego Airport?

What documentation or ID do you need to fly to San Diego Airport?

What is the most popular plane model from Baltimore to San Diego?

What is the most popular airline from Baltimore to San Diego?

Best airlines flying from Baltimore to San Diego

Compare and see reviews for airlines that fly from Baltimore to San Diego with momondo

Southwest Flights From Baltimore to San Diego

United Airlines Flights From Baltimore to San Diego

Traveling to a place near San Diego?

Why use momondo?

Why should I use momondo to find a flight deal from Baltimore to San Diego?

Can I find flights from Baltimore to San Diego with flexible booking policies on momondo?

How can momondo help me find flights from Baltimore to San Diego?

I’m not ready to book a flight from Baltimore to San Diego right now. Can momondo alert me if prices change?

An easier way to manage your San Diego trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States