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Cheap flights from Iaşi to London Heathrow Airport from £113

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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
IAS — LHR
16 Jul — 23 Jul1
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 11 July 2025.

Round-trip from

£145

One-way from

£113

Popular in

July

Cheapest in

March

Average price

£221
Austrian Airlines
  • Austrian Airlines
  • 21/10-3/11
  • 2 total stops
  • 25h 40m total
  • Iaşi to London
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2/9
  • 2/9
  • 1 total stop
  • 21h 10m total
  • Iaşi to London
Search Deals
Highest demand for flights based on searches. 32% potential increase in price (£44 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 July 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 11 July 2025.

Tue 21/1016:00IAS - LHR
1 stop18h 20mAustrian Airlines
Mon 3/1106:00LHR - IAS
1 stop7h 20mAustrian Airlines
Deal found 10/7£145
Tue 21/1016:00IAS - LHR
2 stops6h 45mMultiple Airlines
Mon 3/1106:00LHR - IAS
1 stop7h 20mMultiple Airlines
Deal found 10/7£169
Tue 21/1016:00IAS - LHR
2 stops6h 45mLufthansa
Sat 25/1020:25LHR - IAS
2 stops17h 55mLufthansa
Deal found 10/7£214
Tue 23/1209:25IAS - LHR
2 stops13h 25mKLM
Mon 29/1208:40LHR - IAS
2 stops8h 45mKLM
Deal found 8/7£303

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 11 July 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

Tue 21/10

16:00-08:20

1 stop18h 20m

London Heathrow

Mon 3/11

06:00-15:20

1 stop7h 20m

£145

IaşiLondon

IAS - LHR

IASLHR

Iasi

Tue 21/10

16:00-20:45

2 stops6h 45m

London Heathrow

Mon 3/11

06:00-15:20

1 stop7h 20m

£169

IaşiLondon

IAS - LHR

IASLHR

Iasi

Tue 21/10

16:00-20:45

2 stops6h 45m

London Heathrow

Sat 25/10

20:25-16:20

2 stops17h 55m

£214

IaşiLondon

IAS - LHR

IASLHR

Iasi

Tue 23/12

09:25-20:50

2 stops13h 25m

London Heathrow

Mon 29/12

08:40-19:25

2 stops8h 45m

£303

IaşiLondon

IAS - LHR

IASLHR

Iasi

Tue 2/9

12:15-07:25

1 stop21h 10m

£113

IaşiLondon

IAS - LHR

IASLHR

Iasi

Tue 9/9

05:25-20:55

2 stops17h 30m

£149

IaşiLondon

IAS - LHR

IASLHR

Iasi

Fri 21/11

16:05-22:55

2 stops8h 50m

£149

IaşiLondon

IAS - LHR

IASLHR

Iasi

Sat 19/7

16:00-18:40

1 stop4h 40m

£165

Flights are sorted by cheapest return flights first.

Deals found on 9/7

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 11 July 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.

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 11 July 2025.
Get a feel of what it's like to fly with KLM, Austrian Airlines, andLufthansa from Iaşi to London Heathrow Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,372 reviews
Check prices

Crew

8.4

Boarding

7.8

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,372 reviews
KLM
7.8
Good
1,372 reviews
Check prices

Crew

8.4

Boarding

7.8

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Austrian Airlines
7.6
Good
811 reviews
KLM
7.8
Good
1,372 reviews
Check prices

Crew

8.4

Boarding

7.8

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Lufthansa
6.8
Okay
7,199 reviews
KLM
7.8
Good
1,372 reviews
Check prices

Crew

8.4

Boarding

7.8

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

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 £145. Additional return tickets that might be worth considering are offered by Lufthansa and KLM, with the lowest prices starting at £214 and £303, respectively.

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

    For one-way options, check prices for KLM. According to our data, you can fly for as low as £149. Users have also found prices from £149 and £165 on Lufthansa and Austrian Airlines, 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
Hounslow
Croydon
Milton Keynes
Deal
Northampton
Gatwick
Slough
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Wembley
Crawley
Eastbourne
Ilford
Hayes
Ipswich
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Watford
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Swindon
Maidstone

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How does Cheapflights help users find flights from Iaşi to Heathrow?

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Why should you use Cheapflights to find cheap flight tickets from Iaşi to Heathrow?

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Can Cheapflights notify me if prices for flights from Iaşi to Heathrow become cheaper?

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