HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Glasgow

$519+ Cheap flights from Ontario (ONT) to Glasgow

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 11/28. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — GLA
Nov 2 — Nov 91
Sun 11/2
Sun 11/9
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Glasgow with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Ontario to Glasgow

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Glasgow (GG1). 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 October 3, 2025.

Round-trip from

$711
(Booking.com)

One-way from

$519
(Cheapflightsfares)

Popular in

June

Cheapest in

January

Average price

$661
From Ontario to Glasgow
Search Deals
One-way flight from Ontario to Glasgow
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($228 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Find flight deals from Ontario to Glasgow

Cheapest flights from Ontario to Glasgow
Explore the most affordable flight options available from Ontario to Glasgow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 3, 2025.

This Booking.com deal was found by Cheapflights users on 10/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/34:47 pmONT - GLA
2 stops15h 48mBritish Airways
Sun 11/911:40 amGLA - ONT
2 stops18h 19mBritish Airways
Deal found 10/2$711
This KLM deal was found by Cheapflights users on 10/1. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/154:35 pmONT - GLA
2 stops15h 35mKLM
Tue 10/216:00 amGLA - ONT
2 stops17h 53mKLM
Deal found 10/1$891
This American Airlines deal was found by Cheapflights users on 10/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1412:46 pmONT - GLA
2 stops17h 49mAmerican Airlines
Wed 12/2412:45 pmGLA - ONT
2 stops28h 53mAmerican Airlines
Deal found 10/1$951
This British Airways deal was found by Cheapflights users on 10/1. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/144:47 pmONT - GLA
2 stops19h 38mBritish Airways
Thu 12/256:35 amGLA - ONT
2 stops22h 23mBritish Airways
Deal found 10/1$953
This Delta deal was found by Cheapflights users on 10/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/176:00 amONT - GLA
2 stops26h 35mDelta
Wed 12/249:05 amGLA - ONT
2 stops45h 28mDelta
Deal found 10/1$997
This KLM deal was found by Cheapflights users on 9/30. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/224:35 pmONT - GLA
2 stops15h 35mKLM
Tue 10/286:05 amGLA - ONT
2 stops18h 05mKLM
Deal found 9/30$1,010
This British Airways deal was found by Cheapflights users on 10/1. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/174:47 pmONT - GLA
2 stops18h 38mBritish Airways
Wed 12/248:40 amGLA - ONT
2 stops37h 12mBritish Airways
Deal found 10/1$1,013
This American Airlines deal was found by Cheapflights users on 10/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1412:46 pmONT - GLA
2 stops16h 29mAmerican Airlines
Fri 12/2612:45 pmGLA - ONT
2 stops19h 01mAmerican Airlines
Deal found 10/1$1,041
This KLM deal was found by Cheapflights users on 10/1. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/194:35 pmONT - GLA
2 stops15h 35mKLM
Tue 11/46:05 amGLA - ONT
2 stops19h 05mKLM
Deal found 10/1$1,042
This Delta deal was found by Cheapflights users on 10/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/104:35 pmONT - GLA
2 stops15h 35mDelta
Tue 10/148:55 amGLA - ONT
2 stops21h 46mDelta
Deal found 10/2$1,045
This Delta deal was found by Cheapflights users on 10/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/176:00 amONT - GLA
2 stops26h 35mDelta
Mon 12/229:05 amGLA - ONT
2 stops39h 07mDelta
Deal found 10/1$1,047
This Delta deal was found by Cheapflights users on 10/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/176:00 amONT - GLA
2 stops26h 35mDelta
Sun 12/2110:50 amGLA - ONT
2 stops45h 04mDelta
Deal found 10/1$1,097

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Glasgow 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 October 3, 2025.
Use the filters below to find and compare flights from Ontario to Glasgow that are best for you.

Fly from

Ontario

Fly to

Glasgow

Route

Depart

Return

Price

OntarioGlasgow

ONT - GLA

ONTGLA

Ontario

Mon 11/3

4:47 pm-4:35 pm

2 stops15h 48m

Glasgow Intl

Sun 11/9

11:40 am-9:59 pm

2 stops18h 19m

$711

OntarioGlasgow

ONT - GLA

ONTGLA

Ontario

Fri 2/20

5:03 pm-6:00 pm

2 stops16h 57m

Glasgow Intl

Sun 3/1

6:35 am-9:40 pm

2 stops23h 05m

$727

OntarioGlasgow

ONT - GLA

ONTGLA

Ontario

Thu 3/26

3:09 pm-5:50 pm

2 stops19h 41m

Glasgow Intl

Sun 4/5

10:05 am-11:43 pm

2 stops21h 38m

$950

OntarioGlasgow

ONT - GLA

ONTGLA

Ontario

Sun 12/14

12:46 pm-2:35 pm

2 stops17h 49m

Glasgow Intl

Wed 12/24

12:45 pm-9:38 am

2 stops28h 53m

$951

OntarioGlasgow

ONT - GLA

ONTGLA

Ontario

Sun 12/14

12:46 pm-2:35 pm

2 stops17h 49m

Glasgow Intl

Sun 12/21

12:50 pm-11:46 pm

2 stops18h 56m

$951

OntarioGlasgow

ONT - GLA

ONTGLA

Ontario

Sun 12/14

4:47 pm-8:25 pm

2 stops19h 38m

Glasgow Intl

Thu 12/25

6:35 am-8:58 pm

2 stops22h 23m

$953

OntarioGlasgow

ONT - GLA

ONTGLA

Ontario

Fri 3/27

5:02 pm-6:00 pm

2 stops17h 58m

Glasgow Intl

Tue 3/31

10:55 am-10:02 pm

2 stops19h 07m

$969

OntarioGlasgow

ONT - GLA

ONTGLA

Ontario

Wed 12/17

6:00 am-4:35 pm

2 stops26h 35m

Glasgow Intl

Wed 12/24

9:05 am-10:33 pm

2 stops45h 28m

$997

OntarioGlasgow

ONT - GLA

ONTGLA

Ontario

Wed 12/17

6:00 am-4:35 pm

2 stops26h 35m

Glasgow Intl

Tue 12/23

9:05 am-10:33 pm

2 stops45h 28m

$997

OntarioGlasgow

ONT - GLA

ONTGLA

Ontario

Wed 10/22

4:35 pm-4:10 pm

2 stops15h 35m

Glasgow Intl

Tue 10/28

6:05 am-5:10 pm

2 stops18h 05m

$1,010

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/1

Showing 1-10 of 14 results
1
2

Best time to book a flight from Ontario to Glasgow

Have a flexible travel schedule? Discover the best time to fly to Glasgow from Ontario 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 Ontario to Glasgow

What is the cheapest month to book a flight from Ontario to Glasgow?

Currently, November is the cheapest month in which you can book a flight from Ontario to Glasgow (average of $664). Flying from Ontario to Glasgow in June is currently the most expensive (average of $1,148). 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 ONT to GLA?

Find hourly flight availability from Ontario to Glasgow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 3, 2025.

When flying from Ontario to Glasgow, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Glasgow

Get insights into the airlines that provide service to Glasgow. 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 Glasgow. Reviews last updated October 3, 2025.
Read reviews from past customers who have flown British Airways from Ontario to Glasgow. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,416 reviews

Crew

7.6

Entertainment

6.4

Boarding

6.9

Food

6.3

Overall

6.7

Comfort

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.
British Airways
6.7
Okay
7,416 reviews
British Airways
6.7
Okay
7,416 reviews

Crew

7.6

Entertainment

6.4

Boarding

6.9

Food

6.3

Overall

6.7

Comfort

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.

Related info for your journey

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

  • What airport do you fly from for flights from Ontario to Glasgow?

    If you book a flight to Glasgow from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario. There are 0 flights from Ontario to Glasgow per day from 2 different airlines.

  • How long is the flight from Ontario to Glasgow?

    Departing from Ontario to Glasgow will take you 15h 48m. There are 5088 mi between Ontario and Glasgow. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Ontario to Glasgow round-trip?

    Our cheapest airline available from Ontario to Glasgow is British Airways. Our recent data shows that you can find tickets from as low as $660 on this airline.

  • Can I find deals for flights from Ontario to Glasgow that include hotel bookings?

    Yes. In addition to deals on Ontario to Glasgow flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Glasgow?

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

  • Can I find deals for business class flights from Ontario to Glasgow?

    Yes. Cheapflights offers flight deals from Ontario to Glasgow 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 Ontario to Glasgow?

    Currently, November is the cheapest month in which you can book a flight from Ontario to Glasgow (average of $664). Flying from Ontario to Glasgow in June is currently the most expensive (average of $1,148). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Glasgow

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Edinburgh flights
San Francisco to Edinburgh flights
Los Angeles to Glasgow Intl flights
San Francisco to Glasgow Intl flights
Sacramento to Edinburgh flights
Santa Ana to Glasgow Intl flights
Las Vegas to Edinburgh flights
Ontario to Edinburgh flights
San Diego to Edinburgh flights
Santa Ana to Edinburgh flights
San Diego to Glasgow Intl flights
Sacramento to Glasgow Intl flights
San Jose to Edinburgh flights
San Francisco to Inverness flights
Las Vegas to Glasgow Intl flights
San Jose to Glasgow Intl flights
Ontario to Glasgow Intl flights
Reno to Edinburgh flights
Los Angeles to Inverness flights
Oakland to Glasgow Intl flights
Los Angeles to Aberdeen flights
Oakland to Edinburgh flights
Burbank to Edinburgh flights
San Diego to Inverness flights
San Francisco to Aberdeen flights
San Francisco to Dundee flights
Santa Ana to Inverness flights
Ontario to Aberdeen flights
Long Beach to Edinburgh flights
San Jose to Inverness flights
Oakland to Inverness flights
Long Beach to Glasgow Intl flights
Reno to Glasgow Intl flights
Monterey to Edinburgh flights
San Jose to Aberdeen flights
Palm Springs to Edinburgh flights
Fresno to Glasgow Intl flights
Fresno to Edinburgh flights
Fresno to Aberdeen flights
Long Beach to Aberdeen flights
Las Vegas to Aberdeen flights
San Francisco to Stornoway flights
San Francisco to Sumburgh/Shetland flights
San Francisco to Kirkwall flights
Oakland to Aberdeen flights
Santa Ana to Aberdeen flights

Top 2 airlines flying from Ontario to Glasgow

Discover the top 2 airlines that operate flights from Ontario to Glasgow. 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 October 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$543Average$1,305FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$660Average$900FlexibilityNo cancel feeOn-time70%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.