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Cheap flights from Iaşi to London Heathrow Airport from £91

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 16/7. Fares are subject to change and may not be available on all flights or dates of travel.
IAS — LHR
18 Jun — 25 Jun1
1 adult

Cheap flight deals from Iaşi to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Iaşi (IAS) to Heathrow (LHR). 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 13 June 2025.

Round-trip from

£148

One-way from

£91

Popular in

July

Cheapest in

March

Average price

£153
Austrian Airlines
  • Austrian Airlines
  • 19/9-21/9
  • 2 total stops
  • 19h 15m total
  • Iaşi to London
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16/7
  • 16/7
  • 1 total stop
  • 12h 45m total
  • Iaşi to London
Search Deals
Highest demand for flights based on searches. 32% potential increase in price (£45 potential increase over avg. return price).
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Cheapest flight prices on average. 7% potential price decrease (£7 potential savings vs. average return price).
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Average for round-trip flights in June 2025
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Find flight deals from Iaşi to Heathrow

Cheapest flights from Iaşi to Heathrow
Explore the most affordable flight options available from Iaşi to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 June 2025.

Fri 19/905:20IAS - LHR
1 stop5h 00mAustrian Airlines
Sun 21/909:05LHR - IAS
1 stop14h 15mAustrian Airlines
Deal found 12/6£148
Fri 19/905:20IAS - LHR
2 stops14h 20mMultiple Airlines
Sun 21/909:05LHR - IAS
1 stop14h 15mMultiple Airlines
Deal found 12/6£196
Thu 19/616:00IAS - LHR
2 stops22h 50mLufthansa
Thu 26/606:55LHR - IAS
2 stops16h 25mLufthansa
Deal found 10/6£224
Wed 18/609:15IAS - LHR
2 stops10h 20mKLM
Sun 22/606:30LHR - IAS
2 stops12h 25mKLM
Deal found 9/6£396

Cheapflights Fare Finder

Customise your flight search to find flights from Iaşi to Heathrow 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 858,174 searches. Data last updated 13 June 2025.
Use the filters below to find and compare flights from Iaşi to London Heathrow Airport that are best for you.

Fly from

Iaşi

Fly to

Heathrow

Route

Depart

Return

Price

IaşiLondon

IAS - LHR

IASLHR

Iasi

Fri 19/9

05:20-08:20

1 stop5h 00m

London Heathrow

Sun 21/9

09:05-01:20

1 stop14h 15m

£148

IaşiLondon

IAS - LHR

IASLHR

Iasi

Fri 19/9

05:20-17:40

2 stops14h 20m

London Heathrow

Sun 21/9

09:05-01:20

1 stop14h 15m

£196

IaşiLondon

IAS - LHR

IASLHR

Iasi

Fri 19/9

05:20-17:40

2 stops14h 20m

London Heathrow

Sun 21/9

08:30-01:20

2 stops14h 50m

£227

IaşiLondon

IAS - LHR

IASLHR

Iasi

Tue 5/8

09:15-17:35

2 stops10h 20m

London Heathrow

Thu 7/8

08:40-19:50

2 stops9h 10m

£497

IaşiLondon

IAS - LHR

IASLHR

Iasi

Wed 16/7

06:20-17:05

1 stop12h 45m

£91

IaşiLondon

IAS - LHR

IASLHR

Iasi

Fri 12/9

05:20-08:20

1 stop5h 00m

£132

IaşiLondon

IAS - LHR

IASLHR

Iasi

Wed 2/7

16:00-22:40

2 stops8h 40m

£146

IaşiLondon

IAS - LHR

IASLHR

Iasi

Thu 10/7

14:25-07:40

2 stops19h 15m

£182

IaşiLondon

IAS - LHR

IASLHR

Iasi

Thu 19/6

09:15-09:50

2 stops26h 35m

£391

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Best time to book a flight from Iaşi to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Iaşi with our price prediction graph.
Estimated return 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 Iaşi to London Heathrow Airport

What is the cheapest time of day to fly from IAS to LHR?

Find hourly flight availability from Iaşi to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 13 June 2025.

One of the essential ways to save on airfare from Iaşi to London Heathrow Airport is to remain as flexible as possible. Flights that are at midday tend to be the most expensive. A flight in the morning could potentially save you up to 6% on airfare.

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 13 June 2025.
Read reviews from past customers who have flown KLM, Austrian Airlines and Turkish Airlines from Iaşi to London. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,358 reviews
Check prices

Food

7.2

Boarding

7.8

Comfort

7.7

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
KLM
7.8
Good
1,358 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Food

7.2

Boarding

7.8

Comfort

7.7

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Austrian Airlines
7.6
Good
802 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Food

7.2

Boarding

7.8

Comfort

7.7

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Turkish Airlines
7.3
Good
3,849 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Food

7.2

Boarding

7.8

Comfort

7.7

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Lufthansa
6.8
Okay
7,139 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Food

7.2

Boarding

7.8

Comfort

7.7

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.

Related info for your journey

Find useful and relevant information for your journey from Iaşi to Heathrow. 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 Iaşi to London Heathrow?

    If you book a flight to London Heathrow from Iaşi, you will be flying from Iasi, which is the city’s only airport. Iasi (IAS) is located 1.3 mi from the center of Iaşi. There are 0 flights from Iasi to London Heathrow per day from 0 different airlines.

  • What are the cheapest airlines flying from Iaşi to London Heathrow Airport round-trip?

    Flying on Austrian Airlines is currently your cheapest option to London Heathrow Airport, with prices starting at £148. Additional return tickets that might be worth considering are offered by Lufthansa and KLM, with the lowest prices starting at £227 and £497, respectively.

  • What are the cheapest airlines to fly from Iaşi to London Heathrow Airport one-way?

    For one-way options, check prices for Austrian Airlines. According to our data, you can fly for as low as £132. Users have also found prices from £146 and £182 on Lufthansa and KLM, respectively.

  • Can I find deals for flights from Iaşi to Heathrow that include hotel bookings?

    Yes. In addition to deals on Iaşi to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Iaşi to Heathrow?

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

  • Can I find deals for business class flights from Iaşi to Heathrow?

    Yes. Cheapflights offers flight deals from Iaşi to Heathrow 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 Iaşi to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from Iaşi to London Heathrow Airport (average of £112). Flying from Iaşi to London Heathrow Airport in August is currently the most expensive (average of £164). 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

Travelling to a place near Iaşi?

Book flights to Iaşi if you plan to visit one of these locations
Deal
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Croydon
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Wembley
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Eastbourne
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Ipswich
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Swindon

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