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Cheap flights from Ottawa to Buenos Aires from C$ 543

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 29/11. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — BUE
16 Nov — 23 Nov1
1 adult
1 adult, Economy

Find flight deals from Ottawa to Buenos Aires

Enter your travel dates to find the best prices.

Cheapest flights from Ottawa to Buenos Aires
Explore the most affordable flight options available from Ottawa to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 October 2025.

Mon 1/127:30 p.m.YOW - EZE
2 stops33h 50mUnited Airlines
Mon 8/1211:55 p.m.EZE - YOW
2 stops18h 37mUnited Airlines
Deal found 16/10C$ 1,080
Mon 1/125:55 p.m.YOW - EZE
2 stops35h 25mUnited Airlines
Tue 16/1210:05 p.m.EZE - YOW
2 stops18h 22mUnited Airlines
Deal found 16/10C$ 1,085
Wed 12/117:30 p.m.YOW - EZE
2 stops33h 50mUnited Airlines
Sun 16/1111:55 p.m.EZE - YOW
2 stops25h 59mUnited Airlines
Deal found 15/10C$ 1,095
Tue 11/119:45 a.m.YOW - EZE
2 stops19h 35mUnited Airlines
Tue 18/1111:55 p.m.EZE - YOW
2 stops39h 37mUnited Airlines
Deal found 14/10C$ 1,097
Sun 9/117:30 p.m.YOW - EZE
2 stops33h 50mUnited Airlines
Sun 16/1111:55 p.m.EZE - YOW
2 stops25h 59mUnited Airlines
Deal found 15/10C$ 1,115
Wed 31/127:27 p.m.YOW - EZE
2 stops35h 53mUnited Airlines
Sat 28/210:05 p.m.EZE - YOW
2 stops22h 50mUnited Airlines
Deal found 14/10C$ 1,125
Tue 11/116:00 a.m.YOW - EZE
2 stops23h 20mUnited Airlines
Mon 17/1110:05 p.m.EZE - YOW
2 stops18h 22mUnited Airlines
Deal found 15/10C$ 1,136
Mon 1/127:15 a.m.YOW - EZE
3 stops29h 20mMultiple Airlines
Tue 16/128:55 a.m.EZE - YOW
2 stops25h 23mMultiple Airlines
Deal found 16/10C$ 1,254
Mon 1/127:15 a.m.YOW - AEP
3 stops33h 05mMultiple Airlines
Sun 7/1212:10 a.m.AEP - YOW
3 stops34h 15mMultiple Airlines
Deal found 16/10C$ 1,259
Mon 1/127:15 a.m.YOW - AEP
3 stops35h 25mMultiple Airlines
Tue 16/126:10 a.m.AEP - YOW
3 stops28h 08mMultiple Airlines
Deal found 16/10C$ 1,261
Sat 29/115:40 a.m.YOW - EZE
2 stops25h 20mDelta
Sat 6/1211:55 p.m.EZE - YOW
2 stops26h 47mDelta
Deal found 15/10C$ 1,272
Sun 30/119:30 a.m.YOW - AEP
3 stops32h 30mMultiple Airlines
Sat 6/1212:10 a.m.AEP - YOW
3 stops34h 15mMultiple Airlines
Deal found 16/10C$ 1,320

Cheap flight deals from Ottawa to Buenos Aires

Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) to Buenos Aires (BUE). 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 17 October 2025.

Round-trip from

C$ 1,066

One-way from

C$ 543

Popular in

December

Cheapest in

September

Average price

C$ 1,290
United Airlines
  • United Airlines
  • 7/1-27/1
  • 4 total stops
  • 59h 44m total
  • Ottawa to Buenos Aires
Search Deals
United Airlines
  • United Airlines
  • 29/11
  • 2 total stops
  • 35h 50m total
  • Ottawa to Buenos Aires
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 160 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 49 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ottawa to Buenos Aires 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 629,999 searches. Data last updated 17 October 2025.
Use the filters below to find and compare flights from Ottawa to Buenos Aires that are best for you.

Fly from

Ottawa

Fly to

Buenos Aires

Route

Depart

Return

Price

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Mon 1/12

7:30 p.m.-7:20 a.m.

2 stops33h 50m

Buenos Aires Ministro Pistarini

Mon 8/12

11:55 p.m.-4:32 p.m.

2 stops18h 37m

C$ 1,080

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Mon 1/12

5:55 p.m.-7:20 a.m.

2 stops35h 25m

Buenos Aires Ministro Pistarini

Tue 16/12

10:05 p.m.-2:27 p.m.

2 stops18h 22m

C$ 1,085

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Wed 12/11

7:30 p.m.-7:20 a.m.

2 stops33h 50m

Buenos Aires Ministro Pistarini

Mon 17/11

10:05 p.m.-4:32 p.m.

2 stops20h 27m

C$ 1,095

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Sun 30/11

9:45 a.m.-7:20 a.m.

2 stops43h 35m

Buenos Aires Ministro Pistarini

Sun 7/12

11:55 p.m.-4:32 p.m.

2 stops18h 37m

C$ 1,095

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Wed 12/11

9:45 a.m.-9:20 a.m.

2 stops21h 35m

Buenos Aires Ministro Pistarini

Thu 20/11

10:05 p.m.-11:54 p.m.

2 stops27h 49m

C$ 1,095

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Wed 3/12

7:30 p.m.-7:20 a.m.

2 stops33h 50m

Buenos Aires Ministro Pistarini

Sun 7/12

11:55 p.m.-4:32 p.m.

2 stops18h 37m

C$ 1,095

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Wed 12/11

7:30 p.m.-7:20 a.m.

2 stops33h 50m

Buenos Aires Ministro Pistarini

Sun 16/11

11:55 p.m.-11:54 p.m.

2 stops25h 59m

C$ 1,095

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Tue 11/11

9:45 a.m.-7:20 a.m.

2 stops19h 35m

Buenos Aires Ministro Pistarini

Tue 18/11

11:55 p.m.-1:32 p.m.

2 stops39h 37m

C$ 1,097

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Thu 13/11

7:30 p.m.-7:20 a.m.

2 stops33h 50m

Buenos Aires Ministro Pistarini

Thu 20/11

11:55 p.m.-11:54 p.m.

2 stops25h 59m

C$ 1,097

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Mon 10/11

7:30 p.m.-7:20 a.m.

2 stops33h 50m

Buenos Aires Ministro Pistarini

Sun 16/11

11:55 p.m.-11:54 p.m.

2 stops25h 59m

C$ 1,115

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/10

Showing 1-10 of 26 results
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Best time to book a flight from Ottawa to Buenos Aires

Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Ottawa 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 Ottawa to Buenos Aires

What is the cheapest month to book a flight from Ottawa to Buenos Aires?

Currently, July is the cheapest month in which you can book a flight from Ottawa to Buenos Aires (average of C$ 691). Flying from Ottawa to Buenos Aires in March is currently the most expensive (average of C$ 1,109). 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 YOW to BUE?

Find hourly flight availability from Ottawa to Buenos Aires. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 October 2025.

One of the essential ways to save on airfare from Ottawa to Buenos Aires is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 38% on airfare.

How much does it cost to fly round-trip from Ottawa to Buenos Aires?

Reviews of airlines servicing Buenos Aires

Get insights into the airlines that provide service to Buenos Aires. 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 Buenos Aires. Reviews last updated 17 October 2025.
Read reviews from past customers who have flown United Airlines and Air Canada from Ottawa to Buenos Aires. 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.
United Airlines
7.4
Good
8,982 reviews
Check prices

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Entertainment

7.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
8,982 reviews
United Airlines
7.4
Good
8,982 reviews
Check prices

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Entertainment

7.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Air Canada
7.1
Good
10,306 reviews
United Airlines
7.4
Good
8,982 reviews
Check prices

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Entertainment

7.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

Related info for your journey

Find useful and relevant information for your journey from Ottawa to Buenos Aires. 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 Ottawa to Buenos Aires?

    Most people fly from Ottawa (YOW) if they book a flight from Ottawa to Buenos Aires. On average, Ottawa has 0 outbound flights to Buenos Aires per day from 2 airlines. Ottawa is conveniently located just 10.6 km from Ottawa’s city centre.

  • How long is the flight from Ottawa to Buenos Aires?

    Airlines like United Airlines fly from Ottawa to Buenos Aires in about 33h 50m. The time it takes to get you to your destination can typically vary by up to . The distance from Ottawa to Buenos Aires is about 9070 km.

  • What are the cheapest airlines flying from Ottawa to Buenos Aires round-trip?

    Cheapflights users have booked flights from Ottawa to Buenos Aires round-trip from C$ 1,117. Another airline that can offer you cheap pricing is United Airlines. Air Canada is currently priced 21% below the average price you’ll pay for this route.

  • Can I find deals for flights from Ottawa to Buenos Aires that include hotel bookings?

    Yes. In addition to deals on Ottawa to Buenos Aires flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ottawa to Buenos Aires?

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

  • Can I find deals for business class flights from Ottawa to Buenos Aires?

    Yes. Cheapflights offers flight deals from Ottawa to Buenos Aires 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 Ottawa to Buenos Aires?

    Currently, July is the cheapest month in which you can book a flight from Ottawa to Buenos Aires (average of C$ 691). Flying from Ottawa to Buenos Aires in March is currently the most expensive (average of C$ 1,109). 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

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Top 2 airlines flying from Ottawa to Buenos Aires

Discover the top 2 airlines that operate flights from Ottawa to Buenos Aires. 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 629,999 searches. Data last updated 17 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 1,117AverageC$ 1,328FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 1,130AverageC$ 1,592FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ottawa to Buenos Aires?

Cheapflights helps you search for flights from Ottawa to Buenos Aires via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Ottawa to Buenos Aires?

Millions of users choose and trust Cheapflights to book the best flight deals from Ottawa to Buenos Aires for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Ottawa to Buenos Aires with no change fees?

Yes! Cheapflights helps users easily find flights from Ottawa to Buenos Aires with no change fees.

Can Cheapflights notify me if prices for flights from Ottawa to Buenos Aires become cheaper?

Not ready to book yet? You can track prices for flights from Ottawa to Buenos Aires on Cheapflights with our Price Alert feature and get notified when better prices are available.

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