$364 Cheap Flights from Ontario (ONT) to Glasgow (GGW)

View $364 flight on Sun, Nov 9, 2025Opens in a new window

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Glasgow, MT (GGW-Glasgow Valley County)

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Cheap Flights from Ontario to Glasgow (ONT-GGW)

Prices were available within the past 7 days and start at $364 for one-way flights and $398 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Dec 16 - Mon, Jan 5
ONT
Ontario
GGW
Glasgow
$398 Roundtrip, found 2 days ago
$398
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Dec 16 from Ontario to Glasgow, returning Mon, Jan 5, priced at $398 found 2 days ago
Delta
Mon, Dec 15 - Mon, Jan 5
ONT
Ontario
GGW
Glasgow
$423 Roundtrip, found 2 days ago
$423
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Dec 15 from Ontario to Glasgow, returning Mon, Jan 5, priced at $423 found 2 days ago
Alaska Airlines
Tue, Nov 18 - Sat, Nov 22
ONT
Ontario
GGW
Glasgow
$699 Roundtrip, found 2 days ago
$699
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Nov 18 from Ontario to Glasgow, returning Sat, Nov 22, priced at $699 found 2 days ago

Frequently asked questions

How much does a flight from Los Angeles - Ontario Intl. Airport (ONT) to Glasgow Intl. Airport (GGW) cost?
Secure a cheap one-way flight from $364 or cheap return flight from $398 from Los Angeles - Ontario Intl. Airport (ONT) to Glasgow Intl. Airport (GGW) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Los Angeles - Ontario Intl. Airport (ONT) to Glasgow Intl. Airport (GGW)?
The cheapest month to fly from ONT to GGW is December, when demand is low. Off-peak months are typically when better flight deals are available between these airports.
What is the cheapest airline that flies from Los Angeles - Ontario Intl. Airport (ONT) to Glasgow Intl. Airport (GGW)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest ONT to GGW flight.
How many flights per day from Los Angeles - Ontario Intl. Airport (ONT) to Glasgow Intl. Airport (GGW)?
Direct flights from Los Angeles - Ontario Intl. Airport (ONT) to Glasgow Intl. Airport (GGW) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from ONT to GGW?
Usually you'll find the most flight options available on a Friday. Tuesdays are often the quietest.* But this can change based on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Los Angeles - Ontario Intl. Airport (ONT) to Glasgow Intl. Airport (GGW)?
To land at Glasgow Intl. Airport (GGW) on schedule, select a flight that takes off from Los Angeles - Ontario Intl. Airport (ONT) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Los Angeles - Ontario Intl. Airport (ONT) to Glasgow Intl. Airport (GGW) last-minute?
Last-minute bookings from ONT to GGW are usually more expensive. For the cheapest rates, start searching for flights well in advance. That said, if you can play around with your travel dates, it's possible to find a cheap fare right before you leave.
Is it cheaper to book an ONT to GGW flight and hotel package?
Booking an ONT to GGW flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Select from our wide range of hotels and then add flights, car rentals and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Los Angeles - Ontario Intl. Airport (ONT) to Glasgow Intl. Airport (GGW)?
Typically, it's possible to reschedule or cancel your ONT to GGW flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Los Angeles - Ontario Intl.
Destination airport
Glasgow Valley County
Roundtrip price
$397
Distance
1129 mi

Book with confidence

Ontario to Glasgow Flights

The cheapest times to fly from Ontario to Glasgow

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Ontario to Glasgow are during the month of December. You can find some of the cheapest flights from Ontario to Glasgow with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Ontario to Glasgow

Sunday is one of the best days to book for cheap flights from Ontario to Glasgow: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Ontario to Glasgow

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Ontario to Glasgow in 2025. You can also book with separate airlines for your outbound and return journeys, from $364 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Ontario to Glasgow flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Ontario to Glasgow airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Ontario to Glasgow Flights

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*Available to One Key members.