It said services would be "very limited" and travellers should check which services were running.
Travellers can check the website for office hours or email Randolph to book journeys through mid-April, 2012.
Eventually, albeit slowly, experts believe the switchover will happen, but for now, travellers should check for cards with chips.
British Airways cancelled several short-haul and domestic flights from Heathrow Airport on Sunday night, and both Heathrow and Gatwick advised travellers to check with airlines before leaving home.
Business travellers may also check in at the classy 260-room Leela Palace New Delhi near the Presidential Palace, with its oversized 51sqm guestrooms, or the modern 507-room Hyatt Regency Delhi, one of the largest five-star hotels in town.
Travellers are advised to look at the journey check website before setting out.
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Travellers who want to visit the most ethical zoos can check to see if a particular animal park is a member of the Switzerland-based World Association of Zoos and Aquariums (WAZA).
However, the websites of airlines or hotels are likely to prove more popular with frequent travellers than those of online agents because the former can also be used to check up on rewards, cash them in and to find special offers, such as upgrades.
Certainly travellers can finish up meals, avoid buffets, enquire about food waste when they check into hotels and choose properties, cruise-lines and tour operators that have programmes in place to reduce or recycle wastage.
Travellers should also consider printing out boarding passes ahead of time to speed up the check-in process, and should remember the rules about packing liquids and electronics in carry-on and hand luggage.
For travellers who drive more than fly, lower oil prices should also help keep trip costs in check.
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