Cheap flights To Adelanto (ONT) from $35

Earn rewards on top of your airline miles with Orbitz Rewards

Many airlines offer flexible change policies

Sign up to receive text alerts about your trip

Cheap Flights to Adelanto from $35 One Way, $45 Round Trip

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Mon, Jan 5 - Mon, Jan 5
SEA
Seattle - Tacoma Intl.
ONT
Los Angeles - Ontario Intl.
$45 Roundtrip, found 6 days ago
$45
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Mon, Jan 5 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Mon, Jan 5, priced at $45 found 6 days ago
Sun, Jan 4 - Mon, Jan 5
SEA
Seattle - Tacoma Intl.
ONT
Los Angeles - Ontario Intl.
$50 Roundtrip, found 1 day ago
$50
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sun, Jan 4 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Mon, Jan 5, priced at $50 found 1 day ago
Wed, Nov 19 - Thu, Nov 20
DEN
Denver Intl.
ONT
Los Angeles - Ontario Intl.
$60 Roundtrip, found 6 days ago
$60
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Wed, Nov 19 from Denver Intl. to Los Angeles - Ontario Intl., returning Thu, Nov 20, priced at $60 found 6 days ago
Thu, Jan 22 - Thu, Jan 22
DFW
Dallas-Fort Worth Intl.
ONT
Los Angeles - Ontario Intl.
$63 Roundtrip, found 6 days ago
$63
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Thu, Jan 22 from Dallas-Fort Worth Intl. to Los Angeles - Ontario Intl., returning Thu, Jan 22, priced at $63 found 6 days ago
Sat, Nov 15 - Sat, Nov 15
DEN
Denver Intl.
ONT
Los Angeles - Ontario Intl.
$64 Roundtrip, found 5 days ago
$64
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Sat, Nov 15 from Denver Intl. to Los Angeles - Ontario Intl., returning Sat, Nov 15, priced at $64 found 5 days ago
Fri, Feb 20 - Fri, Feb 27
DFW
Dallas-Fort Worth Intl.
ONT
Los Angeles - Ontario Intl.
$64 Roundtrip, found 1 day ago
$64
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Fri, Feb 20 from Dallas-Fort Worth Intl. to Los Angeles - Ontario Intl., returning Fri, Feb 27, priced at $64 found 1 day ago
Thu, Dec 4 - Mon, Dec 8
SFO
San Francisco Intl.
ONT
Los Angeles - Ontario Intl.
$65 Roundtrip, found 1 hour ago
$65
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, Dec 4 from San Francisco Intl. to Los Angeles - Ontario Intl., returning Mon, Dec 8, priced at $65 found 1 hour ago
Sat, Jan 31 - Wed, Feb 4
DEN
Denver Intl.
ONT
Los Angeles - Ontario Intl.
$68 Roundtrip, found 8 hours ago
$68
Roundtrip
found 8 hours ago
Select Frontier Airlines flight, departing Sat, Jan 31 from Denver Intl. to Los Angeles - Ontario Intl., returning Wed, Feb 4, priced at $68 found 8 hours ago
Thu, Dec 11 - Tue, Dec 16
DFW
Dallas-Fort Worth Intl.
ONT
Los Angeles - Ontario Intl.
$70 Roundtrip, found 9 hours ago
$70
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Thu, Dec 11 from Dallas-Fort Worth Intl. to Los Angeles - Ontario Intl., returning Tue, Dec 16, priced at $70 found 9 hours ago
Thu, Nov 13 - Sun, Nov 16
SFO
San Francisco Intl.
SBD
San Bernardino Intl.
$89 Roundtrip, found 2 days ago
$89
Roundtrip
found 2 days ago
Select Breeze Airways flight, departing Thu, Nov 13 from San Francisco Intl. to San Bernardino Intl., returning Sun, Nov 16, priced at $89 found 2 days ago

Adelanto Flight Information

Traveling To
Adelanto
Destination Airport IATA Code
ONT
Number of Airlines Serving
Airlines
Frontier Airlines, United, Breeze Airways
Flight Price
$45
Earliest Departing Flight
Latest Departing Flight

Book Your Flight & Hotel Together & Save

Adelanto economy flight packages

Price found within the past 48 hours. Click for updated prices.
Noon Lodge at Mallard Bay
3.0-star property

Noon Lodge at Mallard Bay

Dec 8 - Dec 10

2 night stay

Portland (PDX) to Ontario (ONT)

Frontier Airlines • Coach

Ontario (ONT) to Portland (PDX)

Alaska Airlines • Coach
Price was $328, price is now $266 per person
$266
per person
found 4 hours ago
Bluegreen Vacations Big Bear Village, an Ascend Collection Resort
4.0-star property

Bluegreen Vacations Big Bear Village, an Ascend Collection Resort

Dec 8 - Dec 10

2 night stay

Portland (PDX) to Ontario (ONT)

Frontier Airlines • Coach

Ontario (ONT) to Portland (PDX)

Alaska Airlines • Coach
Save 100% on your flight
Price was $457, price is now $318 per person
$318
per person
found 4 hours ago
N+P Boutique Lodge
4.0-star property

N+P Boutique Lodge

Dec 8 - Dec 10

2 night stay

Portland (PDX) to Ontario (ONT)

Frontier Airlines • Coach

Ontario (ONT) to Portland (PDX)

Alaska Airlines • Coach
Save 100% on your flight
Price was $571, price is now $431 per person
$431
per person
found 4 hours ago
Don't see what you're looking for?
See all available trips from Portland to Adelanto
View all trips

Adelanto first class flight packages

Price found within the past 48 hours. Click for updated prices.
@Marbella Lane - Serene Haven Retreat
3.0-star property

@Marbella Lane - Serene Haven Retreat

No reviews

Dec 18 - Dec 26

8 night stay

Portland (PDX) to Ontario (ONT)

Alaska Airlines • Roundtrip • FirstClass
Price was $1,529, price is now $1,248 per person
$1,248
per person
found 2 hours ago
Near ONT Spacious 4BR Family Retreat Safe Area
2.0-star property

Near ONT Spacious 4BR Family Retreat Safe Area

No reviews

Dec 18 - Dec 26

8 night stay

Portland (PDX) to Ontario (ONT)

Alaska Airlines • Roundtrip • FirstClass
Save 100% on your flight
Price was $3,419, price is now $2,750 per person
$2,750
per person
found 2 hours ago
Chic Modern Retreat With Stunning Views
2.0-star property

Chic Modern Retreat With Stunning Views

4/10 (1 review)

Dec 18 - Dec 26

8 night stay

Portland (PDX) to Ontario (ONT)

Alaska Airlines • Roundtrip • FirstClass
Price was $2,288, price is now $1,849 per person
$1,849
per person
found 2 hours ago
Don't see what you're looking for?
See all available trips from Portland to Adelanto
View all trips

Adelanto

End your search for discount fares on flights to Adelanto. Orbitz has all the best prices on Adelanto flights. With Orbitz, you can expect:

Cheap Deals on Flights to Adelanto

We offer big discounts and last-minute savings on Adelanto flights. We make it easy for you to research, plan, and book your flight to Adelanto — all while offering great low fares. With guaranteed low prices and cutting-edge mobile tools, the perfect trip begins on Orbitz.

Travel Convenience on the Go

Get alerts, updates, or book your Adelanto flight or other flights wherever you are. Download our free apps for iPhone, Android, and iPad or visit our mobile site at m.orbitz.com to conveniently review or change your air travel plans. We can also send free alerts about your Adelanto flight to your email or mobile phone, so you get advance warning about potential disruptions and flight delays. Need to book a hotel with your Adelanto flight? Access exclusive, mobile-only deals via our mobile site and free apps – even on the same day.

Great Customer Care

We want to make your travel booking experience smooth and easy, from planning and researching Adelanto flights to the actual booking. If you want to cancel your flight to Adelanto, many tickets can be conveniently cancelled online. Contact our Customer Service to make changes to your air ticket.

Miles or Points Toward Frequent Flyer Programs

Much like booking with an airline directly, you can earn frequent flyer miles or points on qualified flights to Adelanto with Orbitz. When completing your booking, just fill in your frequent flyer number for the airline you are flying with or for one of its available partner airlines.

Frequently asked questions

Which airlines fly to Adelanto?
You can select from 20 airlines that fly in and out of Los Angeles - Ontario Intl. Airport (ONT), the main airport in the city. With plenty of options, you're sure to walk away with an incredible deal. Here are some of the major international airlines that'll get you to Adelanto:

  • Volaris - 9 flights to Adelanto per month
  • China Airlines - 3 flights to Adelanto per month
  • Avianca - 3 flights to Adelanto per month

How much is a flight to Adelanto?
Lots of terrific deals were there for the taking this week, with return flights to Adelanto ranging from $45 to $89. But it was passengers flying in from Denver (DEN) who scored the biggest bargains. One-way tickets to Adelanto started at a low $35.
How to book the cheapest flight to Adelanto?
With some of the most impressive flight deals around, bagging a bargain is easy with Orbitz. The following handy hints will help you snap up cheap flights to Adelanto — and leave you with more money in your pocket:

  • Departing from or arriving at other airports can work out cheaper. Enter your preferred departure and arrival airports. Next, select the 'Nearby airports' function below to compare your options.
  • If you're flexible with your travel plans, click on the 'Show flexible dates' option. It'll bring up flight deals for the days around your chosen departure. Fares often vary depending on what day of the week it is.
  • You can also select the 'Show options' function to filter results for your preferred airline, seating class, nonstop flights and refundable flights. Under 'Sort & Filter' to the left, you can even choose the time of day you'd prefer to fly.
  • Reserve your seat as soon as you've figured out your travel dates. While it does happen from time to time, flights rarely get more affordable as your date of departure nears.
  • Consider combining your hotels, flights and car rentals into one convenient package deal to stretch your budget even further.
  • If practical, avoid flying in the most popular seasons. Airfares significantly increase during summer, school breaks and other vacation periods like Thanksgiving and Christmas.

What is the best time to book a flight to Adelanto?
Pick up a bargain and secure your seats to Adelanto in January. If you've missed this month, fear not. February and August often have affordable airfares as well. Just be careful you don't sleep on a sale — cheap flights emerge and disappear in a flash!
What day of the week is the cheapest to book a flight to Adelanto?
Make a booking on a Tuesday, Wednesday or Saturday. Typically, these are the cheapest days of the week to purchase fares to Adelanto. The vacation of your dreams starts with an incredible flight deal!
What is the cheapest day of the week to fly to Adelanto?
You can pick up cheap flights to Adelanto by flying out on a Monday, according to Orbitz data from 2020. Tuesday is the next most affordable day, while Saturday has the most costly ticket prices. Whether you prefer to save money or start your trip whenever is convenient, you'll always find a rewarding deal with Orbitz.
What is the cheapest month to fly to Adelanto?
Get set to jet for less in August. This is generally an excellent month to take off if you want cheap flights to Adelanto, Orbitz data shows. The least affordable time to fly is June, so avoid this month if possible.
Which airlines allow free cancellation?
If you're concerned your travel plans could change, Orbitz can help you find a flexible fare. All you need to do is choose "Filter by flexible change policies" when searching for your Adelanto flights. We'll show you all the airlines that offer free cancellation and no change fees — all on top of irresistibly low prices.
What do I need for the flight to Adelanto?
The trick to a comfortable and successful flight is being well prepared. Listed below are a few tips to help you get ready for your adventure:

  • Whether you print it out or use an electronic one, you'll need your boarding pass to step foot on the plane. You'll also need some kind of government-issued identification. If you're flying internationally, make sure your passport is valid and you've checked visa requirements.
  • To keep you entertained on the short hop to Adelanto, download some new tunes or stock up the podcast library on your tablet. Food can also be a nice distraction while in the air, so pack a snack.
  • It can get cold on the plane. If you don't like the idea of shivering your way through the flight, pack an extra layer.

How do I get cheap first-class/business deals to Adelanto?
Savvy travelers have a way of finding first or business-class flights to Adelanto that don't cost a packet. You can do the same with these helpful tips:

  • Flexibility isn't just a yoga thing. Have some room to move around your travel dates so you can pick up cheaper airfares when a huge sale drops.
  • Low-cost airlines offer business-class seating at a fraction of the normal price. Give the full-service carriers a miss and look into these cheaper options.
  • Bid for an upgrade in online auctions (if available) or upgrade your ticket with your frequent flyer points.

What is the best time to go to Adelanto?
Adelanto is popular in March, April and July. If you're contemplating visiting during these months, it would be a good idea to book ahead of time to ensure you land the greatest deals. Wondering what summertime's like in Adelanto? Average daily temperatures normally fluctuate between 65 ºF and 85 ºF. Like many destinations in the Northern Hemisphere, summertime commences June 20 here.

More to Explore

Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.