Cheap Flights to Delhi

September is on average the cheapest month to fly to Delhi from the US, with round-trip prices typically around $635 (momondo, March 2026 data). From the UK, September and October represent the best value windows. April and May also offer competitive prices from US cities, per Expedia data. Avoid late December and mid-June through July for the lowest fares — these are the most expensive periods, driven by holiday demand and summer travel.

Yes. Direct flights to Delhi from the US are available nonstop from New York (JFK and EWR), Chicago (ORD), San Francisco (SFO), and Washington D.C. (IAD), operated by Air India, United Airlines, and American Airlines (per FlightConnections and Myticketstoindia, March 2026). From the UK, nonstop Delhi flights operate year-round from London Heathrow (LHR) with Air India, British Airways, IndiGo, and Virgin Atlantic. IndiGo also operates year-round nonstop flights from Manchester (MAN).

There is no single cheapest airline for Delhi because fares vary by departure city, travel dates, and demand. From the United States, Air India, United Airlines, and American Airlines often provide competitive fares, with nonstop options available on selected routes. From the UK, Air India, IndiGo, and Virgin Atlantic are worth comparing, while travellers from the Gulf can often find lower fares with IndiGo and flydubai. The best strategy is to compare fares across airlines on Triwize, keep your dates flexible, and set price alerts so you can book when fares drop.

For booking: Sunday is typically the cheapest day to book, saving 6–13% versus booking on a Friday. For departing: Wednesday is the cheapest day to depart from the US to Delhi. Tuesday and Thursday are also competitive. The most expensive day to fly to Delhi is Saturday.

Indira Gandhi International Airport (DEL) is located approximately 16 km from the city centre (Palam, South-West Delhi). The fastest way to reach central Delhi is the Airport Express Metro, which connects Terminal 3 to New Delhi Railway Station in approximately 19–20 minutes at speeds up to 120 km/h, running from 4:45 AM to 11:30 PM. A taxi or Uber/Ola takes 30–60 minutes depending on traffic, at a cost of ₹500–₹1,200 ($6–$15 USD). Source: Delhi Metro Rail Corporation, WorldofDelhi.com (October 2025).

For international routes: Book 2–4 months in advance for regular travel periods. For peak periods (Christmas, summer), book 6–9 months ahead (Jetsetteralerts.com, February 2026). Travelopod research (November 2025) found that booking 7 weeks in advance saves 26–38% versus booking last minute from the US. For domestic India flights: Book 28+ days in advance to save 24% on average versus last-minute pricing.

Before travelling to India, make sure your passport is valid for at least six months from your date of arrival and has at least two blank pages for immigration stamps. You will also need a valid Indian eVisa or regular visa, depending on your nationality, with citizens of more than 180 countries eligible to apply online. From October 2025, travellers can submit an electronic arrival form online up to 72 hours before travel, while paper forms remain available during the transition period. Travel insurance is also strongly recommended for international travel to India.