Cheap Flights to Diamond Bar

View ₩270,900 flight on Mon, Nov 3, 2025Opens in a new window

Popular airlines to Diamond Bar

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How much is the cheapest flight to Diamond Bar?

Prices were available within the past 7 days and start at ₩270,900 for one-way flights and ₩399,700 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Feb 24 - Mon, Mar 9
GUA
Guatemala City
ONT
Ontario
₩399,700 Roundtrip, found 6 days ago
₩399,700
Roundtrip
found 6 days ago
Select American Airlines flight, departing Tue, Feb 24 from Guatemala City to Ontario, returning Mon, Mar 9, priced at ₩399,700 found 6 days ago
Alaska Airlines
Thu, May 28 - Mon, Jun 15
GUA
Guatemala City
LAX
Los Angeles
₩486,700 Roundtrip, found 1 day ago
₩486,700
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Thu, May 28 from Guatemala City to Los Angeles, returning Mon, Jun 15, priced at ₩486,700 found 1 day ago
United
Thu, Feb 5 - Sat, Feb 14
GUA
Guatemala City
LAX
Los Angeles
₩549,700 Roundtrip, found 1 day ago
₩549,700
Roundtrip
found 1 day ago
Select United flight, departing Thu, Feb 5 from Guatemala City to Los Angeles, returning Sat, Feb 14, priced at ₩549,700 found 1 day ago
avianca
Fri, May 29 - Fri, Jun 19
GUA
Guatemala City
LAX
Los Angeles
₩550,800 Roundtrip, found 1 day ago
₩550,800
Roundtrip
found 1 day ago
Select avianca flight, departing Fri, May 29 from Guatemala City to Los Angeles, returning Fri, Jun 19, priced at ₩550,800 found 1 day ago
Air Canada
Thu, Oct 30 - Sun, Nov 9
ICN
Seoul
LAX
Los Angeles
₩677,000 Roundtrip, found 3 hours ago
₩677,000
Roundtrip
found 3 hours ago
Select Air Canada flight, departing Thu, Oct 30 from Seoul to Los Angeles, returning Sun, Nov 9, priced at ₩677,000 found 3 hours ago

Find the cheapest month to fly from Columbus (CMH) to Los Angeles (LAX)

August is typically the cheapest month to fly

From ₩165,664 - ₩459,082 per traveler.

Frequently asked questions

What is the name of Diamond Bar's airport?
Diamond Bar is served by just a single airport, Los Angeles Intl. Airport (LAX).
What airport is best to fly into Diamond Bar?
Diamond Bar is a favorite with travelers, and it has the airports to prove it. If you're heading off on a trip to this lively city, you'll likely step off the plane at Los Angeles Intl. Airport (LAX) (56 kilometers from downtown). If not, it'll probably be Ontario Airport (23 kilometers from downtown) or Long Beach Airport (32 kilometers from downtown).
How many airlines fly to Diamond Bar?
Diamond Bar is serviced by 63 airlines from at least 155 airports around the world.
Which airlines fly to Diamond Bar?
Most often, travelers fly with Southwest Airlines, Spirit Airlines and Delta Air Lines when going to Diamond Bar. The biggest proportion of these flights come from Las Vegas, with Southwest Airlines operating this route the most frequently.
How many nonstop flights are there to Diamond Bar?
With around 5,323 nonstop flights every week, you'll be landing in Diamond Bar before you can ask, "Are we there yet?"
Where are the most popular flights to Diamond Bar departing from?
Travelers often jet off from San Francisco, Dallas and Seattle airports when going to Diamond Bar.
How long is the flight to Diamond Bar Airport?
Where you depart from determines how much of the in-flight entertainment you'll get to see. From Las Vegas to Diamond Bar, the average flight time is 1 hour and 8 minutes. From San Francisco it's more or less 1 hour and 27 minutes, and from Phoenix it's 1 hour and 21 minutes.
How to book the cheapest flight to Diamond Bar?
If you want to have some extra spending money on your trip to Diamond Bar, then listen up! As any experienced traveler will tell you, don't leave booking until the last minute. Airfares are usually more expensive close to the departure date. Also, do some online research and compare your options. If your destination has several airports, you may be able to nab a great price by flying into a less busy terminal. Lastly, another easy way to save a few dollars is be ready to book at a moment's notice. If you stumble on an amazing deal, don't think twice — grab it while the opportunity's there.
How to survive the flight to Diamond Bar?
Depending on where you're coming from, your trip to Diamond Bar could be a piece of cake or it could drag on forever. We've put together some useful tips that will help you start your next big adventure on the right foot.What to pack in your hand luggage:

  • Air travel can be easy if you bring the right stuff. Firstly, you'll want a few basic toiletry items, such as a toothbrush and some deodorant, a clean pair of socks and a magazine or two. Next, make room in your hand luggage for your electronic devices, chargers, any daily medications and maybe a quality neck pillow as well. Lastly, and most importantly, remember to take your passport, travel papers and some cash.

Do not pack the following items in your hand luggage:

  • Pack all your full-sized bottles of shampoo and hairspray in your checked baggage. Any gels or liquids in your carry-on suitcase larger than 3.4 ounces (100 milliliters) won't be allowed on. Sharp or pointed objects, like a pocket knife, and dangerous products which are flammable or explosive, such as flares, chemicals agents and matches, are also banned.

What to wear on a flight:

  • The key to a comfortable flight can be as simple as your choice in clothes. Prepare yourself for varying temperatures by bringing layers. This will keep you nice and warm if the cabin begins to cool down. Shoes like sandals and heels are best left for other occasions. Instead, opt for flat, closed-toed footwear like sneakers. Your feet will appreciate it.
  • Most travelers are aware of deep vein thrombosis (DVT), a blood clotting condition caused by reduced mobility or inactivity. There's plenty you can do to lower your risk. Wear compression socks or tights, drink lots of water and get your legs and feet moving. Walk around the cabin when possible or perform some stretches in your seat.

How to get through airport security fast when flying to Diamond Bar?
The answer is simple — be prepared. We've pulled together some handy tips and tricks for an easy trip through airport security. Look out Diamond Bar, here you come:

  • First things first. Your travel ID and boarding pass will need to be presented to airport security personnel. Have them close by to avoid fumbling around for them.
  • Next up, both you and your hand luggage will be X-rayed. To speed things up, remove anything that might trigger the alarms. Personal belongings such as your belt, coat and headphones will be required to go through the machine.
  • Electronic devices like laptops and phones will also need to go on a tray for inspection. Don't worry, you'll be back online soon enough.
  • Traveling with your favorite perfume? Not a problem. As long as the volume is no greater than 3.4 ounces (100 milliliters) and it's stored in a zip-close bag, you can keep it with you in your carry-on baggage.
  • Lightweight sneakers are a good footwear choice as you're less likely to be required to remove them when going through security. Boots and other bulky shoes are usually subjected to extra screening.
  • Take all prohibited items out of your carry-on bag. If you have any sharp or pointed objects, pack them in your checked suitcase. They won't be allowed on board and will be confiscated.

Book with confidence

Searching for cheap flights to Diamond Bar? No travel company presents more choices than Expedia if you're looking to compare flights to Diamond Bar. With more airlines, cheaper flights, fewer stops, and more departure and arrival times travellers should ensure they search on Expedia before any holiday to Los Angeles. Expedia provides the cheapest flights to many destinations in Los Angeles and you may find even greater savings if you combine your flight with a hotel stay in Diamond Bar.

Travel information

Destination airport
Los Angeles - Ontario Intl.
Destination airport IATA code
ONT
Destination city name
Ontario
Roundtrip price
₩399,700

Trending flights to Diamond Bar

Prices were available within the past 7 days and start at ₩270,900 for one-way flights and ₩399,700 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Thu, Oct 30 - Sun, Nov 9
ICN
Seoul
LAX
Los Angeles
₩677,000 Roundtrip, found 3 hours ago
₩677,000
Roundtrip
found 3 hours ago
Select Air Canada flight, departing Thu, Oct 30 from Seoul to Los Angeles, returning Sun, Nov 9, priced at ₩677,000 found 3 hours ago

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