AirHint found the following cheapest return flights from Kathmandu (KTM) to Delhi (DEL) in July 2025 (see full year).

Return flights

27 Jul - 01 Aug	SpiceJet	direct
30 Jul - 06 Aug	SpiceJet	direct
31 Jul - 06 Aug	Air India	direct
27 Jul - 02 Aug	Air India	direct
31 Jul - 07 Aug	Air India	direct
28 Jul - 31 Jul	Air India	direct
30 Jul - 05 Aug	Air India	direct
31 Jul - 03 Aug	Air India	direct
29 Jul - 10 Aug	Air India	direct
30 Jul - 31 Jul	SpiceJet	direct
27 Jul - 30 Jul	IndiGo	direct
27 Jul - 28 Jul	IndiGo	direct
31 Jul - 10 Aug	IndiGo	direct
30 Jul - 17 Aug	IndiGo	direct
28 Jul - 30 Jul	Air India Express

Also check the deals for one-way flights from Kathmandu to Delhi in July.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Kathmandu to Delhi in July from 120€

Return flights